If you discovered you were mistyped, what would be your next most likely type? In other words, what other type(s) would you not be all that surprised about being - which could you possibly believe yourself to be?
For me (an INFP), in order of most likely it would be:
I would have to be an somewhat shy and anti-social ENFP but its not inconceivable - I do have a very strong Ne. And in some ways I'm considered too talkative and social for an INFP. As for INTP: I have a detached, logical side to me that this type would appeal to but I'm still more of a bleeding-heart, subjective sort really. I have friends that are ENFPs and INTPs and I have to say I enjoy how they appeal to different sides of me.