I’m not sure about the specific AI apps you mention, but from my personal experience the “AMD works way better than Nvidia on Linux” mindset is no longer a thing.
When I upgraded to a new gpu a few years ago, I first got an AMD gpu because of that mindset that was all over the internet (I believed them), but for the life of me I couldn’t get games to run properly with it. A week later I traded it for an Nvidia card and it just works.
I do suffer from system wake from sleep issues that I think are the nvidia drivers fault, but atleast I can play games if I decide to.
Of course, I run EndeavourOS. My guess is that nowadays it doesn’t matter if you run amd or nvidia (likely won’t run into problems with either).