So, I made a post a few days ago about how the new Unreal Tournament supports CUE now, and saw that Diablo 3 just added support as well. I was thinking perhaps we can begin to make a list of games that have native support for CUE.
Diablo 3 (Possibly Patched out?) Far Cry 5 Homefront: The Revolution Metro: Exodus Neverwinter Unreal Tournament (Pre-Alpha)
If anyone knows anymore, I'll add them to the list!