I do like the younger/smaller guy as the bottom, but sometimes there are exceptions. fuefue since I am small myself and like to be dominated I like to read fics where the smaller one is the bottom most of the time 🥴

I feel the exception where the smaller/younger person is the one topping is if the taller/older has such a soft side that they're just subby by nature. (not the best example but yoonbum and sangwoo from KS, sangwoo is younger but obvi more dominating and taller) I think it really would just depend on the dynamic of the characters?