You definitely seem like a 6, you're very much about reading between the lines, your mind seems to be very hamster-wheelish and jumpy. I can relate to that.
Crossing over to MBTI...You're probably a feeler, and probably a Pe user. I'm guessing you're a Fi-user as well. I know you don't wanna hear that, but that's just my read. Your brain hops like a Pe-user, and the way you reacted to people questioning your authenticity seemed Fi-ish to me.
You could be INFJ, but you just don't seem like you are at first blush. I remember Arclight, an INFJ 6w5, who was sensitive like you. I don't know you very well though, so it's hard to say.
I hope you can settle into the community, and not take people's comments to heart. I think you'll find there's much insight to be gained on here.