They don’t recognise the hole-punched Expedition Base Set kiosk cards.
I honestly think they’re correct to not recognise the FPO cards because they weren’t intended to be released and the Collector Charizard itself is a third-party stamp. It bugs me though that they do accept certain other cards which weren’t intended to be released like the Sample Set cards (and I say that as an owner of a PSA 10 Sample Pichu) - their double standards are very annoying sometimes.
They also don’t recognise Imation Matchprint™ proofing prints, but maybe that’s for the best.
There are also a lot of non-TCG cards PSA refuse to grade including phone cards, Bandai and Topsun sets which they have graded examples from different sets of in the past.