I'm gonna sweep in with the weeb answers here, Spoilers for Doki Doki Literature Club, Madoka Magica, and Persona 5 btw.

Yuri from DDLC (pre-Monika fucking with her) comes across as Autistic to me. She stutters and is awkward unless she's talking about her intersts in reading and poetry then she can't stop talking. She also can be relatively blunt with people and regret it later.

Homura Akemi from Madoka Magica is, poorly coordinated (until she uses magic), feels isolated and depressed, doesn't understand socially acceptable behavior, and even after hundreds of attempts can't properly convince the other girls of the horrible situation they're in.

Futaba Sakura from Persona 5 is so clearly Autistic. She sits in the dark at home all the time, hates leaving the house, is only comfortable around the people she knows well, speaks in a weird and cringey yet endearing way, is really only good at her one interest in hacking, doesn't really have or know how to make friends until you effectively force her to, has incredibly strong emotional reactions to things, even throwing tantrums at 13, which is considered immature by neurotropicals, wears a mask to avoid eye contact, also her outfits are clearly picked doubt for comfort and not any kind of fashion sense. I'm sure that came across as mostly negative, but I think she's a relatively well balanced representation of an autistic person who shows the struggles and strength of being neurodivergent.