There’s a game on my Quest - I don’t remember which one - where when you hold the controllers up close to your face it pops up the controls, with arrows pointing to each button.

That should be all but standardized, other than exceptions in games where that could be a problem.

It’s not so bad when you’re used to the system, but giving it to someone and trying to explain what button does what isn’t exactly fun. You usually end up needing to move their fingers for them, and playing a weird version of that scene from Ghost with my father-in-law isn’t my version of a good time.