I agree with this 95%, except I prefer X & C over Z & X. This is because I've had people mention to me that X & C is better for the relatively common AZERTY layout (which would obviously put Z up on the top row. X & C stay where they are, however.)
That's fair! They are pretty close, so it's not far off. I just find many games like to use z and x (especially pico-8, tic80 fantasy consoles, etc), so they are always the first two buttons I try when playing a game.
