I was quite in keeping with Asperger's description when I was little and probably still am. I was called a 'little adult' rather than a 'little professor'. I didn't relate to other children, lacked empathy (in the sense of feeling or connecting with other people's emotions), hated sports, feel over alot, was highly anxious, perfectionistic, verbose and pedantic.
As for obsessive interests, mine were - Alien and UFO sightings, Psychiatry (mother is a psych nurse, so I was exposed to plenty of the literature) and Irish history. I also had a few collections I was preoccupied with.
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For time has imprisoned us,
In the order of our years,
In the discipline of our ways,
And in the passing of momentary stillness.
We can see our chaos in motion.