Protondb is a really good source for that information. I do want to mention protonupqt though. Basically when you go on Protondb you might see that some people are using versions of proton that aren’t included with steam(like proton-GE, aka glorious eggroll). Protonupqt provides a tool that downloads some of those for you and even installs them in steam.

And for games that aren’t on steam using the heroic launcher (for epic, gog, and amazon(?) games) or lutris (everything else) is the way to go.

Strange that kali is listed, since it is such a specialized distro.

Iirc the white border is a helldivers2 issue

As for minimizing the game I don’t remember having that issue but it has been a while since I played.

I know you are mostly asking about ripping the media. But I would recommend looking at tiny media manager to pull metadata and organize.