These are just the default keycaps that came with the board, even from keychron directly. I got it on eBay tho, so the previous owner might've swapped them out, but I doubt it.

I don't have much point of reference for comparison, but they seem... alright? The spacebar and other modifiers sound very different than the rest (but I need to double check, maybe they've got different switches). I'll have a better idea of my thoughts on these keycaps if I can get another set to compare them to.