There is absolutely no doubt that people are strange and diverse- you never meet the same type of person twice because we don't fit into 'types' or 'categories' we are too varied.

I am a part of a group of people known as High functioning Autistics (or Aspies, as well as a whole host of other names) We often have some similar difficulties, weather it be recognising other people's emotions from facial expressions to flapping hands and irrational dislikes for particular things based on texture, colour and other factors, devealoping obsessions and being stuck to a routine/habit (as well as tons of other common traits too)
But even within this group of people that I suggest I am a part of, we are all different. Yes, some of us are better with Maths to English, but not all. Yes, some of us fail to understand jokes, sarcasm and irony, but not all. Yes, some of us are clearly disabled, but not all.

You could know more about someone than anybody else on the planet, but there are still a million things you could never know, and will never know. People are complex, and even the similar ones are different.
Categorise yourself all you wish, be a part of as many social groups as you can if that is what makes you happy but you will always be unique.
No matter what, you are you and you are original.