That leaks fake as shit, but I would assume Cards = Joker (Persona 5) or the Persona 4 MC (who uses cards). I'm not sure who they'd go with, but I know it wouldn't be 1/2's main character since they're less popular and it wouldn't be 3 since he points a gun at his head. 4's design is more bland but has been on a Nintendo system and is from the better game, Joker's design is cooler but 5 wasn't even out when the design doc was created.
IMO, Whip-Simon, Pic-K Rool, Witch-Ashley, Sliced Apple-Rhythym Trio, Anime-Rex/Pyra, Archer-Decidueye, Cards-Joker/Persona 4 MC. House/science I don't have a single clue for. Kinda makes me think Minecraft or Labo.
Echo Hints-Prime-Dark Samus, Edgy-Shadow, Dog-Isabelle. Asthma I don't know and Blue Hair could be a lot of characters.
One of my bigger things against this list would be the very possible lack of a new third party company, though we kinda get it through Atlus (though Sega now owns them). I think we're very likely to get one of these, with Bethesda, Ubisoft, or an indie studio being the most likely.