There are comments from people who claim to have super-recognizer ability at the below-linked article about prosopagnosia at the Australian online magazine for an educated readership The Conversation. One of the super-recognizers is apparently an inherited case with a parent who had the same level of ability.
The Australian Prosopagnosia Register or Australian Prosopagnosia Participant Register was mentioned in the article, which is a register for people who wish to participate in research and also suspect that they are inborn cases of prosopagnosia. This register appears to be maintained by Macquarie University.
The English celebrity Stephen Fry was identified as one of a number of famous prosopagnosics, based in a Tweet that he wrote, claiming to be a “mild” case. This is interesting because there is some indication that Fry also experiences colours for the days of the week which is a type of synaesthesia, and the gay actor has also been diagnosed with one of the milder categories of bipolar, following a bad reaction to some quite severe bullying. I would want to be more certain of all of these diagnoses before speculating about any possible causal link between them.
I should know you: ‘face blindness’ and the problem of identifying others. by Romina Palermo The Conversation. August 16th 2012. https://theconversation.com/i-should-know-you-face-blindness-and-the-problem-of-identifying-others-8884
Australian Prosopagnosia Participant Register https://www.maccs.mq.edu.au/research/projects/prosopagnosia/register/