Wisful thinking, and your GPA is great -
Instead of describing the challenges of being neurodivergent (in your case having autism), focus on your unique strengths that come with autism. and maybe the specific strategies you use to succeed.
Demonstrate that you understand yourself. This shows maturity and the ability to adapt and thrive IMO.
Although probably not quite for top 20 schools - your academic, test, and activity accomplishments are impressive and I think you will help your next school build community; and they will appreciate that.