marblebees:
So far we only had Young Woo who has the savant type of autism (very rare) and the guy who had the mental age of a child (also rare), this really isn't much variety tbh. And these reinforce the stereotype that there are either insanely smart or dumb people that can be autstic (but MOST are somewhere in inbetween) I related to Young Woo a lot, but personally i mask way more than she does, it would be interesting to see a character who is less "obvious" autistic at first
While it isn't outright stated, I think it was implied that Woo Young Woo's mother and her half brother were also on the autistic spectrum.
When Woo Young Woo went to the shopping mall with Choi Soo Yeon, they passed by Tae Soo Mi. While Woo Young Woo was fixing a pile of shirts, Tae Soo Mi was shown straightening out some shoes, which I think was meant to show that she is on the autistic spectrum, as well as the link between them. Also, autism is known to have a genetic component, so it would make sense for one of Woo Young Woo's parents to be autistic, and her father definitely isn't.
As for her half brother, he was shown having a very similar sleeping routine as Woo Young Woo which, while it doesn't have to mean he is autistic, in combination with the genetic component of autism and the indications of him having special interests, does suggest that he is also on the spectrum. Admittedly, the half brother does seem to have a more savant type of autism, which doesn't really represent the variation in the spectrum that you're looking for, but I think that Tae Soo Mi does act as a good example of someone who is on a different place in the spectrum and/or is more proficient at masking. And while her half brother does seem to be quite a genius, he still seems to be at a different place in the autistic spectrum than Woo Young Woo and/or masks more.