Most of the examples they've chosen seem.. not good? What an odd mix of bad game engine and AI slop. I can't imagine that this stuff makes good training data for real-world applications.
https://github.com/nv-tlabs/3dgrut/
https://github.com/NVIDIA/harmonizer
https://github.com/NVIDIA/instant-nurec
https://github.com/nvidia/ncore
Nvidia also is integrating Gsplat into at least what I work on and contributing upstream.