There are two schools of thought on when growth ends in males: 1) You stop growing mostly at 16, and only grow an inch at most afterwards. (This is what CDC data shows). 2) The age of 16 is very young, males grow and mature well into their early 20's.
Most boys only grow at maximum an inch after turning 16, which I haven't anecdotally seen to be the case IRL or on here. I'm really surprised that I grew 2 inches after turning 18, and this is after having my growth "paused" since I was 15.
When I was 16 I first came to this site as a lurker, because I was very scared that I had stopped growing permanently and would forever be very short and have a child-like body. But even now I'm shocked as to how much my body has continued to mature and my torso and chest have masculinized within the past year.
But in retrospect, that just seems so silly. Looking at photos of me at 16... Man I just look so young and small, I can't believe that I thought that my growth was done with, or that I would only grow an inch maximum from that age... I will show some other 16 year olds here:
16 year old Gaten Matarazzo, Stranger Things actor, with his mother:
https://www.instagram.com/p/BlgB0zeli6K/16 year old Tristyn Lee, Instagram bodybuilder, with his brothers:
https://www.instagram.com/p/BiUsJzcnpZ-/16 year old Romeo Beckham with his father, footballer David Beckham:
https://www.instagram.com/p/BpZXqJonYdd/Do you really think they are all done growing? They all look like babies honestly. They are still much smaller than their parents, not just in height but in overall dimorphism and their heads are still so small lol. I can't imagine them growing one inch more at maximum, I anticipate they'll each grow at the very least another 3 inches and masculinize a fair bit, but that wouldn't follow the CDC growth curve or go with what most statistics have to say about stages of development.
I guess there is just a LOT of variability in how people develop.... So much so that an "average" isn't really meaningful.