I really wonder if "other girls" actually exist.

Everyone knows the "not like other girls" trope. I keep wondering if those "other girls" are really there. Like, the basis of the idea is "Other girls are skinny and pretty and wear makeup and go to parties but I like reading Harry Potter and wearing hoodies and watching true crime documentaries on Netflix." But I've met waaaaaaay more hoodie-wearing true crime stans than I have skinny makeup-wearing party girls. So...where ARE the "other girls?" Are they even real?