I think ISFJ. It's never felt out of place. ISFJs=awesome.
Freude, schöner Götterfunken Tochter aus Elysium, Wir betreten feuertrunken, Himmlische, dein Heiligtum! Deine Zauber binden wieder Was die Mode streng geteilt; Alle Menschen werden Brüder, Wo dein sanfter Flügel weilt.
My vote goes for ISFJ, but I'd be interested to hear what makes you consider the other ones.
Well, my cognitive function test results are under my username, and my I/E and J/P are always borderline. I never fully relate to any of the MBTI descriptions but that's probably because I don't have a really great self-awareness. When I was a child I'm pretty sure I was ESFP. Definitely extroverted. Now I can't tell if I'm a more reserved or depressed extrovert or a more courageous (when necessary) introvert. Mostly I'm just curious about how others see me. It's always interesting to see how others see me.
Also, I can't help but wonder now if I might end up having the only "what type am I?" thread with all the same answers.