Thank you for this, really helpful advice, ProtonDB looks really useful. I tend to be a bit more patient with games and buy later when on sale. I might just wipe Windows and reinstall it with the bare necessities for only the games that I need it for.
Thank you. The issue with Arch Linux was more about the performance and some games at the time just not working, which looking at ProtonDB shows they work fine now. I really enjoyed my time with Arch, all the customization and manually installing applications made it feel more personal and really "mine". I will probably give a few distros a try before really settling in.
I like your idea of making a list. If all goes well I might just move over, and keep Windows on a small disk for any outliers.