yeah, i'm not sure about the selection of the trumps being used, because there is 22 of them in total but some of them are indeed clearly abstract and not representative of a personality. like The Fool (trump 0) which everyone is, or will be, if they step on the path.
the 22 trumps represent phases in a spiritual journey, primarily, and there is even a whole story that gypsy fortunetellers memorize, that i had one dude recite to me, took about half an hour, pretty impressive, and then he talked through the meaning of every minor arcana after that.