There's a running joke on my Discord server, that the answer to most #UnrealEngine questions is "did you see how Lyra handles this?" because the Lyra project is so completely full of good examples. UI, multiplayer, editor tools it's all there.
https://www.unrealengine.com/marketplace/en-US/product/lyra
https://www.unrealengine.com/marketplace/en-US/product/lyra
Lyra Starter Game in UE Game Samples - UE Marketplace
Lyra Starter Game is a sample gameplay project built alongside UE5 development to serve as an excellent starting point for creating new games. We plan to continue to upgrade it with future releases to demonstrate our latest best practices.