Do you know that there is an intricate, racial, categorization scheme employed by the government of the USA and each and every State in that country?
Do you mean the data compiled from census and other forms that ask about race?
This is political, independent of science. For one thing, the government LOVES data and eagerly categorizes everything it can to generate more data for its own sake. But second, Democrats in particular don't believe in the people to figure out how to treat each other with dignity so they give themselves the tools to force statistical racially equality on the people.