yeah, I think there's also a people who have an adapted eye lens shape to help with underwater acuity, Sherpa’s with oxygen efficiency at high altitude etc.

I wonder if there is a name for the taxonomic distinction here.

Purely scientifically the Wikipedia page suggests a whole bunch of different types of biological taxonomic distinctions that could be applied, but acknowledges that definitions are all over the place and not necessarily agreed upon.

In that sense you'd need to adjust yourself biologically, at the genetic level, to satisfy some of the definitions.

All of that disregards the non-biological connotations of the discussion though, so not super helpful here, just interesting.