Most likely, both my sons qualify as somewhere on the autism spectrum. They were never formally diagnosed and I used to routinely give advice to parents whose children did have a formal diagnosis when I was involved with an educational organization.
Edit: I left out the critical part. I gave them advice and routinely said for the longest time "I don't have any ASD kids, but when my kid does that..." It happened so much, I began to wonder if maybe I did, actually, have ASD kids. (It was later somewhat confirmed by unofficial professional feedback.)
My first website was a homeschooling blog. It grew out of the seeming popularity of my emails on a homeschooling list with a lot of parents of special-needs kids.
I know quite a lot about autism and related issues.
My oldest was such a pill, he was nicknamed demon child when he was little. He was an adolescent before he understood what I meant because I absolutely wasn't vilifying him, though he was hugely challenging to deal with.
Humans aren't just born with social skills. There is a huge component of being raised right that I think is currently given short shrift by a society too quick to medicalize every parenting challenge, as if there weren't any socially awkward or shy kids before we had fancy labels for them.