It’s just called “Driver Manager” in Mint, I’m guessing it’s specific to the distro. I’ve tried a few different ones, and it’s by far the easiest to switch compared to any other. I think it can theoretically be installed on any Ubuntu-based distro, but I don’t know of anything for EndeavorOS.

Good to know! I haven’t had any AMD GPUs, but it was my understanding they’ve been well supported for a while.

Unfortunately, the open source Nvidia driver isn’t suitable for gaming yet. But some distros (Mint at least) provide an easy GUI to switch to proprietary drivers. Very easy tinkering, as these things go.

AMD is very well supported in Linux, especially on older hardware. If you use something beginner-friendly like Mint, you shouldn’t have to do anything special to get it working well.

I’ve done plenty of installs for older games. I found using Lutris was easier than trying to do it manually, but it’s not perfect (but it handles things like Proton, as another comment mentioned). It’ll let you install games from their windows installers, so whatever games you’ve aquired should install as usual.

I think you can use Steam (for Linux) to manage Proton and your non-steam installs, but I haven’t tried it.