White people have more facial variance than all the people categorized as not White people? That seems unlikely.

But if it were so, then it sort of invalidates your argument because the bias complaints are that the facial recognition algorithms often misidentifies other races (not generally as white but as perhaps not human)

Specifically the scandal some years ago when black people where being identified as gorillas, it seems obvious to me that if non-white people have less facial variance it should be easier to identify black people as black instead of more difficult.