I mostly play rogue likes with controller and would like a XBox/Playstation style controller
I’m assuming you dont need gyro or touchpad that you’ll get with PlayStation / Nintendo compatible controllers, however if you do want those features the Switch Pro controller & the DualSense (PS5) play nicely on my Linux computer (with steam)
Out of the two I’d probably recommend the dual sense since you’re used to Xbox / Western PS layout rather then Nintendo / Japanese PS layout.
I’ve heard good things about the 8bitdo controllers, but can’t comment on their compatibility or quality. The contemporary xbox wireless controllers I don’t personally like, the current ones have this extra grippy texture on the back and thumbsticks that doesn’t sit well with me and the lack of rechargeability ootb is disappointing for the price.
The foundation supports a bunch of other open source projects, after all there is a lot more to devices that run the Linux kernel then just the kernel.
Also, I found it a but funny that the foundation created the PDF using Adobe InDesign 19.4 (Windows), according to the metadata in file posted on their website. (original | archive of the PDF)