diff --git a/packages/react-native/Libraries/Image/RCTImageShadowView.h b/packages/react-native/Libraries/Image/RCTImageShadowView.h
index c2c37cbfa9c..e89a726cc4d 100644
--- a/packages/react-native/Libraries/Image/RCTImageShadowView.h
+++ b/packages/react-native/Libraries/Image/RCTImageShadowView.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTImageShadowView : RCTShadowView
 
 @end
diff --git a/packages/react-native/Libraries/Image/RCTImageView.h b/packages/react-native/Libraries/Image/RCTImageView.h
index 4abd7864850..2d205a8f8b2 100644
--- a/packages/react-native/Libraries/Image/RCTImageView.h
+++ b/packages/react-native/Libraries/Image/RCTImageView.h
@@ -14,6 +14,7 @@
 @class RCTBridge;
 @class RCTImageSource;
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTImageView : RCTView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
diff --git a/packages/react-native/Libraries/Image/RCTImageViewManager.h b/packages/react-native/Libraries/Image/RCTImageViewManager.h
index 5897567ea11..45ea17309cb 100644
--- a/packages/react-native/Libraries/Image/RCTImageViewManager.h
+++ b/packages/react-native/Libraries/Image/RCTImageViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTImageViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/BaseText/RCTBaseTextShadowView.h b/packages/react-native/Libraries/Text/BaseText/RCTBaseTextShadowView.h
index 71da41b89e8..db352c456cd 100644
--- a/packages/react-native/Libraries/Text/BaseText/RCTBaseTextShadowView.h
+++ b/packages/react-native/Libraries/Text/BaseText/RCTBaseTextShadowView.h
@@ -13,8 +13,10 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-extern NSString *const RCTBaseTextShadowViewEmbeddedShadowViewAttributeName;
+extern NSString *const RCTBaseTextShadowViewEmbeddedShadowViewAttributeName
+    __attribute__((deprecated("This API will be removed along with the legacy architecture.")));
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTBaseTextShadowView : RCTShadowView {
  @protected
   NSAttributedString *_Nullable cachedAttributedText;
diff --git a/packages/react-native/Libraries/Text/BaseText/RCTBaseTextViewManager.h b/packages/react-native/Libraries/Text/BaseText/RCTBaseTextViewManager.h
index 7f865aa620d..94d69165bff 100644
--- a/packages/react-native/Libraries/Text/BaseText/RCTBaseTextViewManager.h
+++ b/packages/react-native/Libraries/Text/BaseText/RCTBaseTextViewManager.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTBaseTextViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/RCTTextAttributes.h b/packages/react-native/Libraries/Text/RCTTextAttributes.h
index 7f50eb7b62b..c3594c9de84 100644
--- a/packages/react-native/Libraries/Text/RCTTextAttributes.h
+++ b/packages/react-native/Libraries/Text/RCTTextAttributes.h
@@ -15,15 +15,18 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-extern NSString *const RCTTextAttributesIsHighlightedAttributeName;
-extern NSString *const RCTTextAttributesTagAttributeName;
+extern NSString *const RCTTextAttributesIsHighlightedAttributeName
+    __attribute__((deprecated("This API will be removed along with the legacy architecture.")));
+extern NSString *const RCTTextAttributesTagAttributeName
+    __attribute__((deprecated("This API will be removed along with the legacy architecture.")));
 
 /**
  * Represents knowledge about all supported *text* attributes
  * assigned to some text component such as <Text>, <VirtualText>,
  * and <TextInput>.
  */
-@interface RCTTextAttributes : NSObject <NSCopying>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTTextAttributes : NSObject<NSCopying>
 
 // Color
 @property (nonatomic, strong, nullable) UIColor *foregroundColor;
diff --git a/packages/react-native/Libraries/Text/RawText/RCTRawTextShadowView.h b/packages/react-native/Libraries/Text/RawText/RCTRawTextShadowView.h
index ad1dd0e107d..5aef976c3a1 100644
--- a/packages/react-native/Libraries/Text/RawText/RCTRawTextShadowView.h
+++ b/packages/react-native/Libraries/Text/RawText/RCTRawTextShadowView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTRawTextShadowView : RCTShadowView
 
 @property (nonatomic, copy, nullable) NSString *text;
diff --git a/packages/react-native/Libraries/Text/RawText/RCTRawTextViewManager.h b/packages/react-native/Libraries/Text/RawText/RCTRawTextViewManager.h
index 2be0f052d7b..d8a778f8eb9 100644
--- a/packages/react-native/Libraries/Text/RawText/RCTRawTextViewManager.h
+++ b/packages/react-native/Libraries/Text/RawText/RCTRawTextViewManager.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTRawTextViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/Text/RCTTextShadowView.h b/packages/react-native/Libraries/Text/Text/RCTTextShadowView.h
index 1bffce0e0e0..4654f44282b 100644
--- a/packages/react-native/Libraries/Text/Text/RCTTextShadowView.h
+++ b/packages/react-native/Libraries/Text/Text/RCTTextShadowView.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTTextShadowView : RCTBaseTextShadowView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
diff --git a/packages/react-native/Libraries/Text/Text/RCTTextView.h b/packages/react-native/Libraries/Text/Text/RCTTextView.h
index 03e4f1422b9..044f5e9d918 100644
--- a/packages/react-native/Libraries/Text/Text/RCTTextView.h
+++ b/packages/react-native/Libraries/Text/Text/RCTTextView.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTTextView : UIView
 
 @property (nonatomic, assign) BOOL selectable;
diff --git a/packages/react-native/Libraries/Text/Text/RCTTextViewManager.h b/packages/react-native/Libraries/Text/Text/RCTTextViewManager.h
index 13f374892ba..be14af81b41 100644
--- a/packages/react-native/Libraries/Text/Text/RCTTextViewManager.h
+++ b/packages/react-native/Libraries/Text/Text/RCTTextViewManager.h
@@ -11,6 +11,7 @@
 
 #import "RCTBaseTextViewManager.h"
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTTextViewManager : RCTBaseTextViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
index 838600e75c6..12f3981b07b 100644
--- a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
+++ b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTMultilineTextInputView : RCTBaseTextInputView
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
index e03d70bcc79..5df86494192 100644
--- a/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
+++ b/packages/react-native/Libraries/Text/TextInput/Multiline/RCTMultilineTextInputViewManager.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTMultilineTextInputViewManager : RCTBaseTextInputViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
index 73522039780..c7ef1ac583c 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputShadowView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTBaseTextInputShadowView : RCTBaseTextShadowView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputView.h b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputView.h
index 278f5a90a65..cc8e93faa51 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputView.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputView.h
@@ -20,7 +20,8 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
-@interface RCTBaseTextInputView : RCTView <RCTBackedTextInputDelegate>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTBaseTextInputView : RCTView<RCTBackedTextInputDelegate>
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
 
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
index c51110c7f50..4437dd29510 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTBaseTextInputViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTBaseTextInputViewManager : RCTBaseTextViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
index 02313c782bc..1212be18f12 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryShadowView.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTInputAccessoryShadowView : RCTShadowView
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryView.h b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryView.h
index 415c8e97292..37f9c800c13 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryView.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryView.h
@@ -12,6 +12,7 @@
 @class RCTBridge;
 @class RCTInputAccessoryViewContent;
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTInputAccessoryView : UIView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
index 6f58d48a4ec..a99321288bd 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewContent.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTInputAccessoryViewContent : UIView
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
index 5e0f1396a5e..e12dea79994 100644
--- a/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
+++ b/packages/react-native/Libraries/Text/TextInput/RCTInputAccessoryViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTInputAccessoryViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h b/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
index 26d83797f09..f8a21a8b7ce 100644
--- a/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
+++ b/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSinglelineTextInputView : RCTBaseTextInputView
 
 @end
diff --git a/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h b/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
index e2c924587fb..c28feb91bee 100644
--- a/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
+++ b/packages/react-native/Libraries/Text/TextInput/Singleline/RCTSinglelineTextInputViewManager.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSinglelineTextInputViewManager : RCTBaseTextInputViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
index 2b069f122fd..b0e12aceece 100644
--- a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
+++ b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextShadowView.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTVirtualTextShadowView : RCTBaseTextShadowView
 
 @end
diff --git a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextView.h b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextView.h
index c2643c6c79e..8fa1b53c5dc 100644
--- a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextView.h
+++ b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextView.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTVirtualTextView : UIView
 
 /**
diff --git a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
index 3f1d74014ba..7ce222e588e 100644
--- a/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
+++ b/packages/react-native/Libraries/Text/VirtualText/RCTVirtualTextViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTVirtualTextViewManager : RCTBaseTextViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleView.h b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleView.h
index 2a8a55ddc62..7a1a62153c4 100644
--- a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleView.h
+++ b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperExampleView : UIView
 
 @end
diff --git a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
index 70893ee2af9..2dac9dedc20 100644
--- a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
+++ b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperExampleViewController.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperExampleViewController : UIViewController
 
 @end
diff --git a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
index 2225b2529d8..f7c3ba564e2 100644
--- a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
+++ b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewController.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperReactRootViewController : UIViewController
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
diff --git a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
index 51f634e5e9f..5f7a62ab068 100644
--- a/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
+++ b/packages/react-native/Libraries/Wrapper/Example/RCTWrapperReactRootViewManager.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperReactRootViewManager : RCTWrapperViewManager
 
 @end
diff --git a/packages/react-native/Libraries/Wrapper/RCTWrapper.h b/packages/react-native/Libraries/Wrapper/RCTWrapper.h
index 392a280cc85..3b8cc377ce3 100644
--- a/packages/react-native/Libraries/Wrapper/RCTWrapper.h
+++ b/packages/react-native/Libraries/Wrapper/RCTWrapper.h
@@ -16,29 +16,29 @@
 // Umbrella header with macros
 
 // RCT_WRAPPER_FOR_VIEW
-#define RCT_WRAPPER_FOR_VIEW(ClassName)         \
-                                                \
-  NS_ASSUME_NONNULL_BEGIN                       \
-                                                \
-  @interface ClassName                          \
-  ##Manager : RCTWrapperViewManager             \
-                                                \
-              @end                              \
-                                                \
-  NS_ASSUME_NONNULL_END                         \
-                                                \
-  @implementation ClassName                     \
-  ##Manager                                     \
-                                                \
-      RCT_EXPORT_MODULE()                       \
-                                                \
-      - (UIView *)view                          \
-  {                                             \
-    RCTWrapperView *wrapperView = [super view]; \
-    wrapperView.contentView = [ClassName new];  \
-    return wrapperView;                         \
-  }                                             \
-                                                \
+#define RCT_WRAPPER_FOR_VIEW(ClassName)                                                       \
+  NS_ASSUME_NONNULL_BEGIN                                                                     \
+                                                                                              \
+  __attribute__((deprecated("This API will be removed along with the legacy architecture."))) \
+  @interface ClassName                                                                        \
+  ##Manager : RCTWrapperViewManager                                                           \
+                                                                                              \
+              @end                                                                            \
+                                                                                              \
+  NS_ASSUME_NONNULL_END                                                                       \
+                                                                                              \
+  @implementation ClassName                                                                   \
+  ##Manager                                                                                   \
+                                                                                              \
+      RCT_EXPORT_MODULE()                                                                     \
+                                                                                              \
+      - (UIView *)view                                                                        \
+  {                                                                                           \
+    RCTWrapperView *wrapperView = [super view];                                               \
+    wrapperView.contentView = [ClassName new];                                                \
+    return wrapperView;                                                                       \
+  }                                                                                           \
+                                                                                              \
   @end
 
 // RCT_WRAPPER_FOR_VIEW_CONTROLLER
@@ -46,6 +46,7 @@
                                                                                                                        \
   NS_ASSUME_NONNULL_BEGIN                                                                                              \
                                                                                                                        \
+  __attribute__((deprecated("This API will be removed along with the legacy architecture.")))                          \
   @interface ClassName                                                                                                 \
   ##Manager : RCTWrapperViewManager                                                                                    \
                                                                                                                        \
diff --git a/packages/react-native/Libraries/Wrapper/RCTWrapperShadowView.h b/packages/react-native/Libraries/Wrapper/RCTWrapperShadowView.h
index 61e74193c0a..e554bdd0988 100644
--- a/packages/react-native/Libraries/Wrapper/RCTWrapperShadowView.h
+++ b/packages/react-native/Libraries/Wrapper/RCTWrapperShadowView.h
@@ -15,6 +15,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperShadowView : RCTShadowView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge NS_DESIGNATED_INITIALIZER;
diff --git a/packages/react-native/Libraries/Wrapper/RCTWrapperView.h b/packages/react-native/Libraries/Wrapper/RCTWrapperView.h
index 8131b147348..e2a40bb4352 100644
--- a/packages/react-native/Libraries/Wrapper/RCTWrapperView.h
+++ b/packages/react-native/Libraries/Wrapper/RCTWrapperView.h
@@ -9,12 +9,14 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
-typedef CGSize (^RCTWrapperMeasureBlock)(CGSize minimumSize, CGSize maximumSize);
+typedef CGSize (^RCTWrapperMeasureBlock)(CGSize minimumSize, CGSize maximumSize)
+    __attribute__((deprecated("This API will be removed along with the legacy architecture.")));
 
 @class RCTBridge;
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperView : UIView
 
 @property (nonatomic, retain, nullable) UIView *contentView;
diff --git a/packages/react-native/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h b/packages/react-native/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
index fb98b4b821f..f0dd333c303 100644
--- a/packages/react-native/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
+++ b/packages/react-native/Libraries/Wrapper/RCTWrapperViewControllerHostingView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperViewControllerHostingView : UIView
 
 @property (nonatomic, retain, nullable) UIViewController *contentViewController;
diff --git a/packages/react-native/Libraries/Wrapper/RCTWrapperViewManager.h b/packages/react-native/Libraries/Wrapper/RCTWrapperViewManager.h
index de6d6e35d16..9c8a71aad49 100644
--- a/packages/react-native/Libraries/Wrapper/RCTWrapperViewManager.h
+++ b/packages/react-native/Libraries/Wrapper/RCTWrapperViewManager.h
@@ -13,6 +13,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTWrapperViewManager : RCTViewManager
 
 - (RCTWrapperView *)view NS_REQUIRES_SUPER;
diff --git a/packages/react-native/React/Views/RCTActivityIndicatorView.h b/packages/react-native/React/Views/RCTActivityIndicatorView.h
index 20a66009b62..0f0ae921526 100644
--- a/packages/react-native/React/Views/RCTActivityIndicatorView.h
+++ b/packages/react-native/React/Views/RCTActivityIndicatorView.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTActivityIndicatorView : UIActivityIndicatorView
 @end
 
diff --git a/packages/react-native/React/Views/RCTActivityIndicatorViewManager.h b/packages/react-native/React/Views/RCTActivityIndicatorViewManager.h
index 44b2f74b7aa..0ede6afc2c5 100644
--- a/packages/react-native/React/Views/RCTActivityIndicatorViewManager.h
+++ b/packages/react-native/React/Views/RCTActivityIndicatorViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTConvert (UIActivityIndicatorView)
 
 + (UIActivityIndicatorViewStyle)UIActivityIndicatorViewStyle:(id)json;
diff --git a/packages/react-native/React/Views/RCTDebuggingOverlayManager.h b/packages/react-native/React/Views/RCTDebuggingOverlayManager.h
index 989f60324aa..f09936b2c02 100644
--- a/packages/react-native/React/Views/RCTDebuggingOverlayManager.h
+++ b/packages/react-native/React/Views/RCTDebuggingOverlayManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTDebuggingOverlayManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/React/Views/RCTModalHostView.h b/packages/react-native/React/Views/RCTModalHostView.h
index e8abaf28485..4c5b9cc3f41 100644
--- a/packages/react-native/React/Views/RCTModalHostView.h
+++ b/packages/react-native/React/Views/RCTModalHostView.h
@@ -18,7 +18,8 @@
 
 @protocol RCTModalHostViewInteractor;
 
-@interface RCTModalHostView : UIView <RCTInvalidating, UIAdaptivePresentationControllerDelegate>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTModalHostView : UIView<RCTInvalidating, UIAdaptivePresentationControllerDelegate>
 
 @property (nonatomic, copy) NSString *animationType;
 @property (nonatomic, assign) UIModalPresentationStyle presentationStyle;
diff --git a/packages/react-native/React/Views/RCTModalHostViewController.h b/packages/react-native/React/Views/RCTModalHostViewController.h
index 2146da35a87..aa0c422fa00 100644
--- a/packages/react-native/React/Views/RCTModalHostViewController.h
+++ b/packages/react-native/React/Views/RCTModalHostViewController.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTModalHostViewController : UIViewController
 
 @property (nonatomic, copy) void (^boundsDidChangeBlock)(CGRect newBounds);
diff --git a/packages/react-native/React/Views/RCTModalHostViewManager.h b/packages/react-native/React/Views/RCTModalHostViewManager.h
index 9e4806615a5..a07344796f1 100644
--- a/packages/react-native/React/Views/RCTModalHostViewManager.h
+++ b/packages/react-native/React/Views/RCTModalHostViewManager.h
@@ -15,9 +15,11 @@ typedef void (^RCTModalViewInteractionBlock)(
     UIViewController *reactViewController,
     UIViewController *viewController,
     BOOL animated,
-    dispatch_block_t completionBlock);
+    dispatch_block_t completionBlock)
+    __attribute__((deprecated("This API will be removed along with the legacy architecture.")));
 
-@interface RCTModalHostViewManager : RCTViewManager <RCTInvalidating>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTModalHostViewManager : RCTViewManager<RCTInvalidating>
 
 /**
  * `presentationBlock` and `dismissalBlock` allow you to control how a Modal interacts with your case,
diff --git a/packages/react-native/React/Views/RCTModalManager.h b/packages/react-native/React/Views/RCTModalManager.h
index 3ff4b6a081c..9f3974ab1f4 100644
--- a/packages/react-native/React/Views/RCTModalManager.h
+++ b/packages/react-native/React/Views/RCTModalManager.h
@@ -12,7 +12,8 @@
 #import <React/RCTBridgeModule.h>
 #import <React/RCTEventEmitter.h>
 
-@interface RCTModalManager : RCTEventEmitter <RCTBridgeModule>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTModalManager : RCTEventEmitter<RCTBridgeModule>
 
 - (void)modalDismissed:(NSNumber *)modalID;
 
diff --git a/packages/react-native/React/Views/RCTRootShadowView.h b/packages/react-native/React/Views/RCTRootShadowView.h
index aecfc4d0a6e..4755a5a9de5 100644
--- a/packages/react-native/React/Views/RCTRootShadowView.h
+++ b/packages/react-native/React/Views/RCTRootShadowView.h
@@ -8,6 +8,7 @@
 #import <React/RCTShadowView.h>
 #import <yoga/YGEnums.h>
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTRootShadowView : RCTShadowView
 
 /**
diff --git a/packages/react-native/React/Views/RCTSwitch.h b/packages/react-native/React/Views/RCTSwitch.h
index b92d57e5ca5..6246b967ba1 100644
--- a/packages/react-native/React/Views/RCTSwitch.h
+++ b/packages/react-native/React/Views/RCTSwitch.h
@@ -11,6 +11,7 @@
 
 #import <React/RCTComponent.h>
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSwitch : UISwitch
 
 @property (nonatomic, assign) BOOL wasOn;
diff --git a/packages/react-native/React/Views/RCTSwitchManager.h b/packages/react-native/React/Views/RCTSwitchManager.h
index eada0a5d08f..86096f3a886 100644
--- a/packages/react-native/React/Views/RCTSwitchManager.h
+++ b/packages/react-native/React/Views/RCTSwitchManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSwitchManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/React/Views/RefreshControl/RCTRefreshControl.h b/packages/react-native/React/Views/RefreshControl/RCTRefreshControl.h
index 87423cbcca0..ed563c2a0e9 100644
--- a/packages/react-native/React/Views/RefreshControl/RCTRefreshControl.h
+++ b/packages/react-native/React/Views/RefreshControl/RCTRefreshControl.h
@@ -12,7 +12,8 @@
 #import <React/RCTComponent.h>
 #import <React/RCTScrollableProtocol.h>
 
-@interface RCTRefreshControl : UIRefreshControl <RCTCustomRefreshControlProtocol>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTRefreshControl : UIRefreshControl<RCTCustomRefreshControlProtocol>
 
 @property (nonatomic, copy) NSString *title;
 @property (nonatomic, copy) RCTDirectEventBlock onRefresh;
diff --git a/packages/react-native/React/Views/RefreshControl/RCTRefreshControlManager.h b/packages/react-native/React/Views/RefreshControl/RCTRefreshControlManager.h
index 6b4dfe90231..5d4bf433b5b 100644
--- a/packages/react-native/React/Views/RefreshControl/RCTRefreshControlManager.h
+++ b/packages/react-native/React/Views/RefreshControl/RCTRefreshControlManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTRefreshControlManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaShadowView.h b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
index 38f3067dbbe..a67662caeb1 100644
--- a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
+++ b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaShadowView.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSafeAreaShadowView : RCTShadowView
 
 @end
diff --git a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaView.h b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaView.h
index 411a57a3ba9..5794cfa80d9 100644
--- a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaView.h
+++ b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaView.h
@@ -15,6 +15,7 @@ NS_ASSUME_NONNULL_BEGIN
 
 @class RCTBridge;
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSafeAreaView : RCTView
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge;
diff --git a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
index c5ea18bfe31..37a433764a1 100644
--- a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
+++ b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewLocalData.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSafeAreaViewLocalData : NSObject
 
 - (instancetype)initWithInsets:(UIEdgeInsets)insets;
diff --git a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.h b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
index 2b5d8e6b7d7..0930a3d02fc 100644
--- a/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
+++ b/packages/react-native/React/Views/SafeAreaView/RCTSafeAreaViewManager.h
@@ -11,6 +11,7 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTSafeAreaViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/React/Views/ScrollView/RCTScrollContentShadowView.h b/packages/react-native/React/Views/ScrollView/RCTScrollContentShadowView.h
index 7f04bc72989..500e8b7228a 100644
--- a/packages/react-native/React/Views/ScrollView/RCTScrollContentShadowView.h
+++ b/packages/react-native/React/Views/ScrollView/RCTScrollContentShadowView.h
@@ -11,6 +11,7 @@
 
 #import <React/RCTShadowView.h>
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTScrollContentShadowView : RCTShadowView
 
 @end
diff --git a/packages/react-native/React/Views/ScrollView/RCTScrollContentView.h b/packages/react-native/React/Views/ScrollView/RCTScrollContentView.h
index aaec3406f75..c4653c60d72 100644
--- a/packages/react-native/React/Views/ScrollView/RCTScrollContentView.h
+++ b/packages/react-native/React/Views/ScrollView/RCTScrollContentView.h
@@ -11,6 +11,7 @@
 
 #import <React/RCTView.h>
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTScrollContentView : RCTView
 
 @end
diff --git a/packages/react-native/React/Views/ScrollView/RCTScrollContentViewManager.h b/packages/react-native/React/Views/ScrollView/RCTScrollContentViewManager.h
index 1546f5eb11d..c379c922a08 100644
--- a/packages/react-native/React/Views/ScrollView/RCTScrollContentViewManager.h
+++ b/packages/react-native/React/Views/ScrollView/RCTScrollContentViewManager.h
@@ -9,6 +9,7 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTScrollContentViewManager : RCTViewManager
 
 @end
diff --git a/packages/react-native/React/Views/ScrollView/RCTScrollView.h b/packages/react-native/React/Views/ScrollView/RCTScrollView.h
index 6bb74ebfae5..21beacf11c5 100644
--- a/packages/react-native/React/Views/ScrollView/RCTScrollView.h
+++ b/packages/react-native/React/Views/ScrollView/RCTScrollView.h
@@ -17,7 +17,8 @@
 
 @protocol UIScrollViewDelegate;
 
-@interface RCTScrollView : RCTView <UIScrollViewDelegate, RCTScrollableProtocol, RCTAutoInsetsProtocol>
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
+@interface RCTScrollView : RCTView<UIScrollViewDelegate, RCTScrollableProtocol, RCTAutoInsetsProtocol>
 
 - (instancetype)initWithEventDispatcher:(id<RCTEventDispatcherProtocol>)eventDispatcher NS_DESIGNATED_INITIALIZER;
 
diff --git a/packages/react-native/React/Views/ScrollView/RCTScrollViewManager.h b/packages/react-native/React/Views/ScrollView/RCTScrollViewManager.h
index 6e0ec15bda5..5ca2e223650 100644
--- a/packages/react-native/React/Views/ScrollView/RCTScrollViewManager.h
+++ b/packages/react-native/React/Views/ScrollView/RCTScrollViewManager.h
@@ -10,12 +10,14 @@
 
 #ifndef RCT_FIT_RM_OLD_COMPONENT
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTConvert (UIScrollView)
 
 + (UIScrollViewKeyboardDismissMode)UIScrollViewKeyboardDismissMode:(id)json;
 
 @end
 
+__attribute__((deprecated("This API will be removed along with the legacy architecture.")))
 @interface RCTScrollViewManager : RCTViewManager
 
 @end