I don't know if this helps but the other day it was a debate at our house for this game. My older and I were playing, so she ask: Is he white? Then I say no.
We kept playing, and at the end I won, then she saw my card she say I lie, the guy was white, but he wasn't!
At least to me he looked Latino, hahaha.
I really wasn't try to cheat, but he wasn't black and he also wasn't as white as others, and his face looked like many Mexican friends I have.
We even got pictures of the guy and send it to my husband to ask his opinion.
He said there is not Latino in Guess who, yeah what ever, I don't care what they say, he looked a LOT like a latino to me, haha.
So if anything you may want to add a Latino, lol.