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
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.

Unreal Engine
@_benui would you have an rpg recommendation in this vein?or is this adaptable?
@cara I would say 90% of it is adaptable to an RPG. Maybe it's a bit thin on examples for managing huge numbers of items and data, but there's a lot of handy stuff there for tooling.
@_benui @cara I would agree almost everything is adaptable. We're building an action rpg right now and Lyra serves as a good example for most combat related things. For our specific case the main points "missing" from Lyra would be item/inventory management and large world authoring/procedural Level loading, but I haven't seen any better samples that have the same complexity as Lyra, only showcases of individual features
@jonasreich @cara would city sample help for the world authoring stuff?
@_benui @cara for sure. It's a decent reference for world partition, Masa AI and rule processor, although many of those features are still more volatile than the ones used in Lyra (e.g. data layers got a major rework in 5.1)
It's basically what I meant by other demos being more engine feature showcases rather than full fleshed game samples