A business colleague of mine is white. Her husband is from the Carribean. His skin is black, but since that is the crossroads of the world his ethnic background includes Hispanic, Asian Indian, Chinese, and just about anything else.
Their children would have to answer “All of the Above” on those stupid government race forms.
If it asks for Race, I always check other and put “Human”.
More often lately, it asks for “Ethnic background” - and I check as many as possible, or check “Other - Mixed American”.