I think he was mainstream neurotypical.
from wiki
Quote:
Jackson had a troubled relationship with his father, Joe.[17][18][19] In 2003, Joe acknowledged that he regularly whipped Jackson as a boy.[19] He was also said to have verbally abused "Jackson", saying that he had a "fat nose" on numerous occasions.[20] Jackson stated that he was physically and emotionally abused during incessant rehearsals, though he also credited his father's strict discipline with playing a large role in his success.[17] He first spoke openly about his childhood abuse in an interview with Oprah Winfrey, broadcast in February 1993. He admitted that he had often cried from loneliness and he would vomit at the sight of his father. Jackson's deep dissatisfaction with his appearance, his nightmares and chronic sleep problems, his tendency to remain hyper-compliant, especially with his father, and to remain childlike throughout his adult life, are consistent with the effects of the maltreatment he endured as a young child.[21]
This, and money and fame. Nobody could remain straight and normal with these sorts of influences.
I remember him from childhood. He has never displayed any form of autism that I could recognise.