Nobara is a good choice, it’s based on Fedora, and is maintained by Glorious Eggroll himself, it has out of the box features like proprietary driver installation, game mode, gamescope, etc. That’s what I run on my gaming PC and my HTPC, where my work laptop runs Kubuntu.
That’s like saying “what’s the best ingredients to learn cooking with?”, firstly it all depends on what your want to eat, secondly it doesn’t really matter what the ingredients are to learn cooking skills.