I know a lot of people these days like Japanese layouts since your fingers rest where they naturally are, I guess? But I like straight 3x2 American style layouts because my fingers/brain know the exact distance between buttons, it’s all uniform and I don’t have to guess at the exact distance. It’s like a piano for video games.
The 6 red/green/blue buttons are for my index/middle/ring finger. The yellow button is so I can shift my fingers over for 3 button games or old school NES advantage
style gaming. I don’t care much about my pinky. Also I can use my thumb on yellow and index/middle finger on the top row, that works too.
Everything is angled 10 degrees counter-clockwise for wrist relief so it’s more ergonomic than what US arcades usually had. It’s not too crooked to either direction and natural for my wrist position.
Each button is 36mm from each other (center to center). Joystick is 95mm to the yellow button.