I have a decade old Buffalo famicom-style controller with ABXY just like in your photo, although mine is wired. I've opened it and adjusted the Dpad by partially covering the contacts with tape, and I swear it's the best Dpad I've ever used. I've also got an 8bitdo FC30 Pro but I rarely use it nowadays.
Setting
full-screen-api.warning.timeout
to0
removes the notification at the top of the screen that tells you how to exit fullscreen mode.