diff --git a/packages/react-native/ReactCommon/react/renderer/mounting/tests/StackingContextTest.cpp b/packages/react-native/ReactCommon/react/renderer/mounting/tests/StackingContextTest.cpp
index d2fb2b34033..9d165105786 100644
--- a/packages/react-native/ReactCommon/react/renderer/mounting/tests/StackingContextTest.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/mounting/tests/StackingContextTest.cpp
@@ -164,7 +164,8 @@ class StackingContextTest : public ::testing::Test {
             node->getFamily(), [&](const ShadowNode& oldShadowNode) {
               auto viewProps = std::make_shared<ViewShadowNodeProps>();
               callback(*viewProps);
-              return oldShadowNode.clone(ShadowNodeFragment{viewProps});
+              return oldShadowNode.clone(
+                  ShadowNodeFragment{.props = viewProps});
             }));
   }
 
@@ -260,7 +261,7 @@ TEST_F(StackingContextTest, mostPropsDoNotForceViewsToMaterialize) {
     yogaStyle.setMargin(yoga::Edge::All, yoga::StyleLength::points(42));
     yogaStyle.setPositionType(yoga::PositionType::Absolute);
     props.shadowRadius = 42;
-    props.shadowOffset = Size{42, 42};
+    props.shadowOffset = Size{.width = 42, .height = 42};
     props.backgroundColor = clearColor();
   });
 
diff --git a/packages/react-native/ReactCommon/react/renderer/observers/events/EventPerformanceLogger.cpp b/packages/react-native/ReactCommon/react/renderer/observers/events/EventPerformanceLogger.cpp
index dc66c28a796..a5c1a62bd40 100644
--- a/packages/react-native/ReactCommon/react/renderer/observers/events/EventPerformanceLogger.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/observers/events/EventPerformanceLogger.cpp
@@ -128,7 +128,9 @@ EventTag EventPerformanceLogger::onEventStart(
   {
     std::lock_guard lock(eventsInFlightMutex_);
     eventsInFlight_.emplace(
-        eventTag, EventEntry{reportedName, target, timeStamp});
+        eventTag,
+        EventEntry{
+            .name = reportedName, .target = target, .startTime = timeStamp});
   }
   return eventTag;
 }
diff --git a/packages/react-native/ReactCommon/react/renderer/observers/intersection/IntersectionObserver.cpp b/packages/react-native/ReactCommon/react/renderer/observers/intersection/IntersectionObserver.cpp
index 57f362c1127..d7ee1b49ae2 100644
--- a/packages/react-native/ReactCommon/react/renderer/observers/intersection/IntersectionObserver.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/observers/intersection/IntersectionObserver.cpp
@@ -65,8 +65,8 @@ static Rect getRootNodeBoundingRect(const RootShadowNode& rootShadowNode) {
 static Rect getBoundingRect(const ShadowNodeFamily::AncestorList& ancestors) {
   auto layoutMetrics = LayoutableShadowNode::computeRelativeLayoutMetrics(
       ancestors,
-      {/* .includeTransform = */ true,
-       /* .includeViewportOffset = */ true});
+      {/* .includeTransform = */ .includeTransform = true,
+       /* .includeViewportOffset = */ .includeViewportOffset = true});
   return layoutMetrics == EmptyLayoutMetrics ? Rect{} : layoutMetrics.frame;
 }
 
@@ -74,9 +74,9 @@ static Rect getClippedTargetBoundingRect(
     const ShadowNodeFamily::AncestorList& targetAncestors) {
   auto layoutMetrics = LayoutableShadowNode::computeRelativeLayoutMetrics(
       targetAncestors,
-      {/* .includeTransform = */ true,
-       /* .includeViewportOffset = */ true,
-       /* .applyParentClipping = */ true});
+      {/* .includeTransform = */ .includeTransform = true,
+       /* .includeViewportOffset = */ .includeViewportOffset = true,
+       /* .applyParentClipping = */ .enableOverflowClipping = true});
 
   return layoutMetrics == EmptyLayoutMetrics ? Rect{} : layoutMetrics.frame;
 }
@@ -110,8 +110,8 @@ static Rect computeIntersection(
       getClippedTargetBoundingRect(targetToRootAncestors);
 
   auto clippedTargetBoundingRect = hasCustomRoot ? Rect{
-      rootBoundingRect.origin + clippedTargetFromRoot.origin,
-      clippedTargetFromRoot.size}
+      .origin=rootBoundingRect.origin + clippedTargetFromRoot.origin,
+      .size=clippedTargetFromRoot.size}
       : clippedTargetFromRoot;
 
   return Rect::intersect(rootBoundingRect, clippedTargetBoundingRect);
@@ -231,13 +231,13 @@ IntersectionObserver::setIntersectingState(
   if (state_ != newState) {
     state_ = newState;
     IntersectionObserverEntry entry{
-        intersectionObserverId_,
-        targetShadowNodeFamily_,
-        targetBoundingRect,
-        rootBoundingRect,
-        intersectionRect,
-        true,
-        time,
+        .intersectionObserverId = intersectionObserverId_,
+        .shadowNodeFamily = targetShadowNodeFamily_,
+        .targetRect = targetBoundingRect,
+        .rootRect = rootBoundingRect,
+        .intersectionRect = intersectionRect,
+        .isIntersectingAboveThresholds = true,
+        .time = time,
     };
     return std::optional<IntersectionObserverEntry>{std::move(entry)};
   }
@@ -254,13 +254,13 @@ IntersectionObserver::setNotIntersectingState(
   if (state_ != IntersectionObserverState::NotIntersecting()) {
     state_ = IntersectionObserverState::NotIntersecting();
     IntersectionObserverEntry entry{
-        intersectionObserverId_,
-        targetShadowNodeFamily_,
-        targetBoundingRect,
-        rootBoundingRect,
-        intersectionRect,
-        false,
-        time,
+        .intersectionObserverId = intersectionObserverId_,
+        .shadowNodeFamily = targetShadowNodeFamily_,
+        .targetRect = targetBoundingRect,
+        .rootRect = rootBoundingRect,
+        .intersectionRect = intersectionRect,
+        .isIntersectingAboveThresholds = false,
+        .time = time,
     };
     return std::optional<IntersectionObserverEntry>(std::move(entry));
   }
diff --git a/packages/react-native/ReactCommon/react/renderer/observers/mutation/MutationObserver.cpp b/packages/react-native/ReactCommon/react/renderer/observers/mutation/MutationObserver.cpp
index 61cc66d334f..7d98dcc7628 100644
--- a/packages/react-native/ReactCommon/react/renderer/observers/mutation/MutationObserver.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/observers/mutation/MutationObserver.cpp
@@ -176,10 +176,10 @@ void MutationObserver::recordMutationsInSubtrees(
 
   if (!addedNodes.empty() || !removedNodes.empty()) {
     recordedMutations.emplace_back(MutationRecord{
-        mutationObserverId_,
-        oldNode,
-        std::move(addedNodes),
-        std::move(removedNodes)});
+        .mutationObserverId = mutationObserverId_,
+        .targetShadowNode = oldNode,
+        .addedShadowNodes = std::move(addedNodes),
+        .removedShadowNodes = std::move(removedNodes)});
   }
 }
 
diff --git a/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceHandler.cpp b/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceHandler.cpp
index 2f8a69cf892..014dadd86eb 100644
--- a/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceHandler.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceHandler.cpp
@@ -215,7 +215,7 @@ Size SurfaceHandler::measure(
   std::shared_lock lock(linkMutex_);
 
   if (link_.status != Status::Running) {
-    return layoutConstraints.clamp({0, 0});
+    return layoutConstraints.clamp({.width = 0, .height = 0});
   }
 
   react_native_assert(
diff --git a/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceManager.cpp b/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceManager.cpp
index 81f7d67f3ea..52e11a7c5fa 100644
--- a/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceManager.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/scheduler/SurfaceManager.cpp
@@ -95,11 +95,11 @@ std::optional<SurfaceManager::SurfaceProps> SurfaceManager::getSurfaceProps(
 
   visit(surfaceId, [&](const SurfaceHandler& surfaceHandler) {
     surfaceProps = SurfaceManager::SurfaceProps{
-        surfaceId,
-        surfaceHandler.getModuleName(),
-        surfaceHandler.getProps(),
-        surfaceHandler.getLayoutConstraints(),
-        surfaceHandler.getLayoutContext()};
+        .surfaceId = surfaceId,
+        .moduleName = surfaceHandler.getModuleName(),
+        .props = surfaceHandler.getProps(),
+        .layoutConstraints = surfaceHandler.getLayoutConstraints(),
+        .layoutContext = surfaceHandler.getLayoutContext()};
   });
 
   return surfaceProps;
diff --git a/packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/cxx/react/renderer/textlayoutmanager/TextLayoutManager.cpp b/packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/cxx/react/renderer/textlayoutmanager/TextLayoutManager.cpp
index 2e791aa63ad..8806384bc57 100644
--- a/packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/cxx/react/renderer/textlayoutmanager/TextLayoutManager.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/textlayoutmanager/platform/cxx/react/renderer/textlayoutmanager/TextLayoutManager.cpp
@@ -21,14 +21,17 @@ TextMeasurement TextLayoutManager::measure(
   TextMeasurement::Attachments attachments;
   for (const auto& fragment : attributedStringBox.getValue().getFragments()) {
     if (fragment.isAttachment()) {
-      attachments.push_back(
-          TextMeasurement::Attachment{{{0, 0}, {0, 0}}, false});
+      attachments.push_back(TextMeasurement::Attachment{
+          .frame =
+              {.origin = {.x = 0, .y = 0}, .size = {.width = 0, .height = 0}},
+          .isClipped = false});
     }
   }
   return TextMeasurement{
-      {layoutConstraints.minimumSize.width,
-       layoutConstraints.minimumSize.height},
-      attachments};
+      .size =
+          {.width = layoutConstraints.minimumSize.width,
+           .height = layoutConstraints.minimumSize.height},
+      .attachments = attachments};
 }
 
 } // namespace facebook::react
diff --git a/packages/react-native/ReactCommon/react/renderer/uimanager/PointerEventsProcessor.cpp b/packages/react-native/ReactCommon/react/renderer/uimanager/PointerEventsProcessor.cpp
index f21d91d3c80..ea46a1a3a5e 100644
--- a/packages/react-native/ReactCommon/react/renderer/uimanager/PointerEventsProcessor.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/uimanager/PointerEventsProcessor.cpp
@@ -104,10 +104,12 @@ static PointerEventTarget retargetPointerEvent(
   // More work will be needed to properly take non-trival transforms into
   // account.
   auto layoutMetrics = uiManager.getRelativeLayoutMetrics(
-      *latestNodeToTarget, nullptr, {/* .includeTransform */ true});
+      *latestNodeToTarget,
+      nullptr,
+      {/* .includeTransform */ .includeTransform = true});
   retargetedEvent.offsetPoint = {
-      event.clientPoint.x - layoutMetrics.frame.origin.x,
-      event.clientPoint.y - layoutMetrics.frame.origin.y,
+      .x = event.clientPoint.x - layoutMetrics.frame.origin.x,
+      .y = event.clientPoint.y - layoutMetrics.frame.origin.y,
   };
 
   PointerEventTarget result = {};
diff --git a/packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp b/packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp
index 4855071d9ab..33070056f55 100644
--- a/packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/uimanager/UIManager.cpp
@@ -73,7 +73,9 @@ std::shared_ptr<ShadowNode> UIManager::createNode(
   PropsParserContext propsParserContext{surfaceId, *contextContainer_.get()};
 
   auto family = componentDescriptor.createFamily(
-      {tag, surfaceId, std::move(instanceHandle)});
+      {.tag = tag,
+       .surfaceId = surfaceId,
+       .instanceHandle = std::move(instanceHandle)});
   const auto props = componentDescriptor.cloneProps(
       propsParserContext, nullptr, std::move(rawProps));
   const auto state = componentDescriptor.createInitialState(props, family);
@@ -462,7 +464,7 @@ void UIManager::setNativeProps_DEPRECATED(
                             ->getProps(),
                         RawProps(rawProps));
 
-                    return oldShadowNode.clone({/* .props = */ props});
+                    return oldShadowNode.clone({/* .props = */ .props = props});
                   });
 
               return std::static_pointer_cast<RootShadowNode>(rootNode);
diff --git a/packages/react-native/ReactCommon/react/renderer/uimanager/UIManagerBinding.cpp b/packages/react-native/ReactCommon/react/renderer/uimanager/UIManagerBinding.cpp
index 9ab7416ffee..5f661273a67 100644
--- a/packages/react-native/ReactCommon/react/renderer/uimanager/UIManagerBinding.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/uimanager/UIManagerBinding.cpp
@@ -277,8 +277,8 @@ jsi::Value UIManagerBinding::get(
           auto locationY = (Float)arguments[2].getNumber();
           auto onSuccessFunction =
               arguments[3].getObject(runtime).getFunction(runtime);
-          auto targetNode =
-              uiManager->findNodeAtPoint(node, Point{locationX, locationY});
+          auto targetNode = uiManager->findNodeAtPoint(
+              node, Point{.x = locationX, .y = locationY});
 
           if (!targetNode) {
             onSuccessFunction.call(runtime, jsi::Value::null());
@@ -511,7 +511,7 @@ jsi::Value UIManagerBinding::get(
               Bridging<std::shared_ptr<const ShadowNode>>::fromJs(
                   runtime, arguments[1])
                   .get(),
-              {/* .includeTransform = */ false});
+              {/* .includeTransform = */ .includeTransform = false});
           auto frame = layoutMetrics.frame;
           auto result = jsi::Object(runtime);
           result.setProperty(runtime, "left", frame.origin.x);
diff --git a/packages/react-native/ReactCommon/react/renderer/uimanager/tests/PointerEventsProcessorTest.cpp b/packages/react-native/ReactCommon/react/renderer/uimanager/tests/PointerEventsProcessorTest.cpp
index 09cb2c170a9..79f90dc15b9 100644
--- a/packages/react-native/ReactCommon/react/renderer/uimanager/tests/PointerEventsProcessorTest.cpp
+++ b/packages/react-native/ReactCommon/react/renderer/uimanager/tests/PointerEventsProcessorTest.cpp
@@ -43,7 +43,9 @@ class PointerEventsProcessorTest : public ::testing::Test {
     auto componentDescriptorRegistry =
         componentDescriptorProviderRegistry.createComponentDescriptorRegistry(
             ComponentDescriptorParameters{
-                eventDispatcher, std::move(contextContainer), nullptr});
+                .eventDispatcher = eventDispatcher,
+                .contextContainer = std::move(contextContainer),
+                .flavor = nullptr});
 
     componentDescriptorProviderRegistry.add(
         concreteComponentDescriptorProvider<RootComponentDescriptor>());
@@ -83,7 +85,7 @@ class PointerEventsProcessorTest : public ::testing::Test {
             auto sharedProps = std::make_shared<RootProps>();
             auto &props = *sharedProps;
             listenToAllPointerEvents(props);
-            props.layoutConstraints = LayoutConstraints{{0,0}, {500, 500}};
+            props.layoutConstraints = LayoutConstraints{.minimumSize={.width=0,.height=0}, .maximumSize={.width=500, .height=500}};
             auto &yogaStyle = props.yogaStyle;
             yogaStyle.setDimension(yoga::Dimension::Width, yoga::StyleSizeLength::points(400));
             yogaStyle.setDimension(yoga::Dimension::Height, yoga::StyleSizeLength::points(400));
diff --git a/packages/react-native/ReactCommon/react/utils/tests/hash_combineTests.cpp b/packages/react-native/ReactCommon/react/utils/tests/hash_combineTests.cpp
index 7b5fd583ff9..79bbde74994 100644
--- a/packages/react-native/ReactCommon/react/utils/tests/hash_combineTests.cpp
+++ b/packages/react-native/ReactCommon/react/utils/tests/hash_combineTests.cpp
@@ -67,8 +67,8 @@ TEST(hash_combineTests, testStrings) {
 }
 
 TEST(hash_combineTests, testCustomTypes) {
-  auto person1 = Person{"John", "Doe"};
-  auto person2 = Person{"Jane", "Doe"};
+  auto person1 = Person{.firstName = "John", .lastName = "Doe"};
+  auto person2 = Person{.firstName = "Jane", .lastName = "Doe"};
 
   std::size_t seed = 0;
   hash_combine(seed, person1);
diff --git a/packages/react-native/ReactCommon/reactperflogger/fusebox/FuseboxTracer.cpp b/packages/react-native/ReactCommon/reactperflogger/fusebox/FuseboxTracer.cpp
index b08572ddc37..848b164b1b9 100644
--- a/packages/react-native/ReactCommon/reactperflogger/fusebox/FuseboxTracer.cpp
+++ b/packages/react-native/ReactCommon/reactperflogger/fusebox/FuseboxTracer.cpp
@@ -110,7 +110,10 @@ void FuseboxTracer::addEvent(
     return;
   }
   buffer_.push_back(BufferEvent{
-      start, end, std::string(name), std::string(track.value_or(""))});
+      .start = start,
+      .end = end,
+      .name = std::string(name),
+      .track = std::string(track.value_or(""))});
 }
 
 bool FuseboxTracer::stopTracingAndWriteToFile(const std::string& path) {