Nvidia is still finicky. Should work the majority of the time, but you’ll have more bugs with Nvidia for sure (ask me how I know), though less than Nouveau.
However, NVK may be changing that fact. It’s a successor to Nouveau, and it is built upon a new codebase. The only downside (-ish) is that it only works on RTX series cards and beyond, and it’s an unfortunate limitation because of how they were able to reverse engineer the newer RTX API to make a better driver.
But at this point, I’d still go with an AMD 6700XT or better to get the best experience on Linux (dunno how Intel Arc cards are).