So then I would look at these autism checklists and say, "yep, that's me," but when I actually looked at the strict diagnostic criteria, it wasn't that clear.
Looking at this article, I get it. There are other, more focused criteria that can be more appropriate. But those diagnoses don't trigger the special services, so they don't get used often enough.
What is my takeaway? People often don't conform to a model of average human behavior. Being unusual isn't necessarily a grave character flaw (which is what my mother had me believe) but merely an expression of the great variety of human intellect and behavior. It gives me license, without official diagnosis, to enjoy being who I am without shame or embarrassment.
I studied philosophy during a large extent of my life, and I am a convinced Witgensteinian.
Also we tend to underestimate our own symptoms. As a ADHD person it took me a long time to understand that many of my struggles were not things everyone experienced. I still find it hard to really grasp that most people don't suffer from executive dysfunction and can just do things, even things they are not interested in.
Honestly if you relate to autistic people chances are high that you have some form of neurodivergence. It might be worth trying to get a diagnosis, even just to be sure.