I have an 8bitdo Ultimate 2 Bluetooth (so the switch version) and it works well. I had to add the line manually to the SDL DB, as I was using the beta firmware. Default firmware works out of the box.

I’d suggest the Ultimate 2 Wireless instead as it should have full SteamInput support.

I couldn’t get the customization and update app to work under wine. It’s not a huge issue, but if you want that functionality you need to boot into windows.

Xbox Series X controller works out of the box on USB. Haven’t tried Bluetooth, but I couldn’t get the proprietary wireless dongle to work (it should work with the xone driver)