People mistake me for a middle schooler as a 15 year old boy

I haven’t experienced significant changes after 13, my face basically looks the same, my body haven’t changed much like yeah i had some changes but definitely not much if the teachers who taught me at 13 saw me now they would think i look the same maybe just my shoulders a bit broader (cause i gained some muscle naturally, not changes in my skeletal structure) and i haven’t grown in height not even an inch. You may say i’m just a late bloomer but the problem is I STARTED PUBERTY AT 9.5 YEARS OLD. I think the only significant change was from summer 2021 to spring 2022 i was 11 in both and i grew another 2 inches from 11 almost 12 ,to 12 almost 13 and since then i’ve been the same height (5’3). I mean a generous amount of people have assumed i’m an adult on call but I still don’t look like an adult at all, didn’t have my first ejaculation, didn’t really have a “growth spurt” at any point in puberty and i just wanna know if this normal? I can’t believe in a year from now i’ll be 16 and still look like this not in a negative way but i mean a bit surprised cause i see some 16 year olds who look GROWN i don’t mean that they’re literally fully grown but they actually look their age and look like mid teens not early teens i just wanna ask if i’m still growing? ALL my male relatives have pretty hairy chests and actually look adult-ish (cause they’re adults no shit) and i didn’t reach that stage of development but at the same time i started puberty pretty early and didn’t experience significant changes in years so i don’t know if i’m still going through puberty? How long can puberty possibly last i searched it up on google and it doesn’t give me any other answer than “2-5 years” but it’s been almost 6 years..