My T's practice has a website where all the T's list their philosophies along with some stuff about themselves. It helps in giving a sense of who they are and their personality as T's. So maybe try to find a practice that does that? Or if it's an individual T in private practice, if they have their own website? Of course you can't know for sure till you get in there, but at least if you can get some sense of them in advance, that could help.