I know where the OP is coming from. I am about as sure as I can be that I’m an INFJ, as compared to the other types. I took the MBTI without knowing the slightest thing about it – my manager at work just asked us all to take the test. I had always been sceptical of personality tests, but when I read the INFJ description, I was shocked at how accurate it seemed – even some things I was vaguely aware of but had trouble articulating. When I later looked more into the other types, there were none that I identified with nearly as much – except to a certain extent with ISFJ and INFP.
I think INFJ is supposed to have a bit of a “glamour†about it though, as it’s “special†and “rare†and all this. I think a lot of “real†INFJs would tell you that it’s not necessarily a highly desirable thing to be, not more so than other types, anyway. It’s rather exhausting actually…
Certainly online, in forums such as these, there is a pro-N bias and anti-S, and it certainly makes sense that more introverted N types would be on these forums than extroverted S types, or even introverted S types.
It does also seem that the vast majority of “real†or “professed†INFJs on the internet claim to have more of a lean toward an NT type such as INTJ or INTP (still "rare" and "special") than toward, say, ISFJ. With the possible exception of INFP, I know for a fact that the closest second type for me would be ISFJ. I know (and am not ashamed!) that I am a fairly “S†INFJ. However, the descriptions for INFJ make far, far more sense for me than ISFJ, and I quite consistently type as INFJ in any tests I have taken – occasionally I get other results, but not that often. (I seem to have fairly close splits/be fairly balanced. F seems to remain consistent over T.)
Just rambling, sorry, and I probably didn’t add anything of great interest that others didn’t say already!