Processed scanned model (made using Scaniverse on an Iphone 12 with Lidar). Inside Blender I changed the UV's. and exported the result as a new model. Then inside Substance Designer I transferred the texture from the raw scan, to the new UV's, for use in Substance Alchemist. Inside Alchemist, I used the AI material generation to generate a normal map, delighted the colour texture, and back in Substance Designer, combined the results from Alchemist with additional bakes.
This was just an experiment, but with some proper modeling/retopo and UV mapping, you can make game-ready assets this way.