"Neurotypical" and "neurodivergent" are social constructions, in my intellectual view and my personal experience.
In high-dimensional spaces, "average" is a useless concept, as is "bell-curve".
There is no more high-dimensional space than the space of humans.
I don't know anyone who is "normal".
The most normal thing I see in humans is the extent to which we all shape ourselves to try to fit.