If I recall correctly, INTJ is the most common personality type for people on the autism spectrum. As for me, I don't fit neatly into one category. I always come out as very strongly I and also J, but I can get N or S and T or F depending on my mood when I take the test, although I think I've become more Sensing recently than I used to be.
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Yet in my new wildness and freedom I almost welcome the bitterness of alienage. For although nepenthe has calmed me, I know always that I am an outsider; a stranger in this century and among those who are still men.
-H. P. Lovecraft, "The Outsider"