Linux Mint or Nobara would be great beginner distros and would each be great for gaming. If gaming is more important, I would lean towards Nobara. If general use is more important, Mint.
Keep in mind that you can try most of these out in a Virtual Machine. Some others to consider are PikaOS and CachyOS. I’m also working on my migration, and I install and set up everything with each ISO as if I was doing it for real, to see what hiccups I might run into. It will be slower, but it’s just a trial run, so just expect things to be faster when you do it for real!
I use Bazzite on a laptop that’s shared by family, and it’s great. I never have to worry about downtime, and I know they’ll always have a computer should something happen to me.
I once had a bad update, and I just used
rpm-ostree rollback
, and I was up and running again. Really great for anyone that wants to set it and forget it.