Ive been using Gnome with Fedora ever since I switched to Linux. So far it has been smooth sailing. I would say the choice of distro doesn’t matter that much, both Mint and Fedora are very easy to use. Just pick one with the Desktop Environment you like the most. If you are not sure, test them on a Virtual Machine.
Oh yeah, I always forget about that website. It’s quite good for testing out a lot of distros fast, but you need an account to have internet, you can’t use keyboard shorcuts (idk if there is a way to make them work) and they are a bit slow. It’s still worth a shot, though!