My T shares next to nothing about herself. She never volunteers personal information or anecdotes about her own experiences at all. I have asked her a handful of vague questions like how many children she has (no clue about their ages), what the weather was like where she grew up (she comes from Europe) and if she can play a musical instrument. She has next to no online presence so I don't know anything else about her.
I really like it this way. She is always consistent in every way in therapy (her presence, attitude, manner, emotional state, behavior) and is 100% focused on supporting me in each session. We don't have outside contact either, but the one time I did send an email (there were exceptional circumstances) she replied appropriately. My therapy is only about me and I find it really helpful, much more so than past experiences where I have been more involved with and invested in the therapist.
I feel like I can work smarter with this T.