I think what OP is communicating is this:

There are dozens (perhaps hundreds) of different mental models. There is a single mental model that is neither good nor bad that appears to to cover the largest number of living human beings on the planet. Because this covers the largest number of humans, it holds the title of the standard by which all other mental models are judged. It is the baseline. "Neuro" being "of the nerves" and typical" meaning "common". It is, by definition, neurotypical.

So OP continues the thought with: Consider instead of the mental model that is today's "neurotypical", that some other mental model was shared by the largest number of living humans. Would that other mental model, which could be drastically different, be called the "neurotypical".

The answer, clearly, is: Yes. Simply the definition of the term defines it so.