You can extrapolate endless amounts of racial groups from the population. Hell, there's some group of 1,000 people in the Himalayas who are genetically distinct enough to be considered their own race. It's why race isn't recognized by geneticists, there's no clear boundary where one race ends and another begins

Rather than "race" it would be more appropriate to say "ethnicity" since regardless of genetic makeup, there is a clear difference in appearance and phenotype from people who are natives of different continents