Dave Pellizza is a 3D modeler, environmental artist.
If you search @3Dave666, you find some great videos.
He said he's using Deforum and WarpFusion.
I looked up WarpFusion and found this on reddit:
Create mocap animations. create 3d models, imported to unreal engine, create a scene there and export a video. then turn every frame to anime with AI.
I found these sites: