I recently saw a young Asian girl who rifled thru a deck of cards, memorizing each one. Then after all the cards were dealt out to 4 or 5 other kids, she was able to name the card when any of the kids was told to turn over the top card in their pile.
I’ve seen magician do similar. i think he had the memory and that trick was not a trick. Jerry Lucas an Ohio State/NBA player from the 60s had photographic memory and he made million selling books and lessons about how to improve your memory.