
I'll try not to completely rain on the parade, but...
Kind of be careful with the UE5 excitement. I was with you in wanting to make one of these "Wow, look at what's being done with UE5 already,
this is the future of gaming!!" threads myself, then I realized, they were all basically UE 4.2X demos running in the UE5 test system. Yes, they're turning on Lumen, maybe they've gotten a boost from using Nanite, but otherwise they were getting similar results with UE4 (using different plugins that might in some cases be replaced by UE5 natively) and most of them are just using UE5 (intentionally or not) as the hook. The scenes were usually built and lit previously in UE4, they've almost always got megascan assets that have been around for a while, (albeit rarely integrated at the high-poly version levels available thanks to UE5,) and they're built easier in the established UE4.2X rather than the nascent and somewhat unstable UE5. Then UE5 takes a really good UE4 project and runs it even smoother and maybe a little prettier. The actual engine performance is amazing, when you dig into the numbers (which is one of the reasons all of these developers post their UE4 projects as UE5 tests, because they can't believe "it just works"), but the visuals aren't always thanks to the newness of UE5.
Take the area that looks really cool in UE5 for example, but this ArchViz set is a familiar UE asset package that also looked supercool two years ago or more in UE4:
(This implementation of the ArchViz set does let the user show off the Lumen lights turning on/off, and lights of different color temperatures blending in a scene.)
Hopefully you get what I'm trying to say here, not that it's not awesome to check into the UE5 party (which is just getting started,) but that we kind of missed the party for UE4 while we were playing all those games, and although some of these demos satisfy while we wait to REALLY see some flexing of UE5 as it matures, we should just in general celebrate Unreal Engine as bad-ass technology as itself.