ummm...I took one of those "kid" MBTI tests based upon my memories of myself when I was little and I got INJ child. I also tested INFJ when I was seventeen...I remember being displeased with the result because J meant "Judging"
I remember that INFP seemed more appealing to me, like it was mystical or something.
I consistently tested INFJ, even at points in my life where my behavior actually seemed MUCH more ExxP than it does right now. However, on other tests I have gotten INFP and ENFP.
I identify most strongly with Fi, not Fe, through function theory...which makes me an xNFP. My value system is just not Fe enough. I may use some Fe, but it is NOT my preferred function, so I can't be INFJ in terms of function theory.
HOWEVER, apparently I seem IxFJ to some people in person.
All of this would seem to point to INFJ, but broken down into Ni/Fe/Ti/Se...NO WAY. Especially the Fe and the Ti. I identify much more strongly with Fi and Te.
Not only that, but I'm quite openly expressive, though I'm not especially social and spend plenty of time alone. I'm a borderline I/E but ....yeah.
This isn't an exact science. If you try to make it into one you might end up tearing your hair out.