OP (and other parents of ND teens). I am 40. I have ADHD and ASD and dyslexia.
I was very childish and did not want to grow up as a teen/ tween. I loved reading books, a mixture of high brow classics and stuff aimed at kids. I like cartoon/ Disney movies and collected Winnie the Pooh beanie babies. I also liked watching art house theatre and international films.
I loved (and still do) any excuse for dress up. I still have my favourite childhood teddy bear and doll. As an adult, I have a Jellycat bunny (that the kids nick regularly).
But I also have a successful career. A loving husband, two kids, a house (and mortgage) etc.
My teen and early 20s were tough - but I got through, and whilst I may still be a little childish and still hold on to some childhood things - I am a functioning adult (mostly).
A lot of this is because of a few good, close friends, my loving family (especially my mum and sister). It may not always be an easy ride, but with support, love, and occasional kicks up the backside (figuratively speaking) quirky neurodiverse teens can have happy, fulfilling, and at least outwardly normal lives.