i play GBA games on an emulator and the X key is equivalent to A and the Z key is equivalent to B
and i use a QWERTZ keyboard
and i actually really like it that way, since, for example, i won't accidentally boost in a racing game while holding the X ("A") key down

Me playing minecraft on switch:

B or A should be the jump buttons

Who tf uses the top button as the jumo button

jump*

Elder scrolls and fallout players