Out of pure curiosity... how absolute is face-blindness? Would you be unable to recognize the face even of someone you’re very close to, like a close friend, ev

Out of pure curiosity... how absolute is face-blindness? Would you be unable to recognize the face even of someone you’re very close to, like a close friend, everyday coworker, or significant other? Or would you still need non-facial cues to identify them? Given two people with similar skin darkness, could you recognize that one is White and the other East Asian? Or that one is Indian and the other Black? Do you notice any deficiencies in other types of pattern recognition, or more generally any other mental differences that you think might be connected?