Xcode 15 and 5.2 is not working, the way that UE 5.3 generates the projects I think is the game changer. It separates iOS and macOS. they also have removed a couple of headers and some other stuff according to the release notes.
Gonna try later on Ventura with Xcode 14 and an Intel Mac, and see how it goes. So we can rule out Xcode and narrow it to UE 5.3.