Yeah, I can't explain right now (quite tired) the differences in Jung/MBTI, but basically MBTI padded Jung's functions with extra stuff in attempt to be more specific. Both have their inaccuracies though, but i'd say MBTI has more, because Jung's work could be interpreted different ways (and has been, there's more than the MBTI).

I recommend reading about Jung and MBTI differences. There's Keirsey as well, and a few others i'm forgetting right now. Socionics is another one, a Russian version apparently.

I personally will stay with Jung though, because he was the one who started this chain, and I understand ideas like he does (I believe he typed himself as an INXP)

It's interesting you got E over I now though, that was the different in the MBTI result for me (that I agreed with), and I gotta say, I do believe deep down i'm more extrovert than introvert i've been in the last few years, that i've just learned to be an introvert, and saying that, how much of the world is learning to be/act like an introvert with the rise of the internet? (ENTPs are apparently the most introverted extroverts though, so that complicates things more, lol)

Thought for food