There are quite a few people exploring this https://differentbrains.org/an-internal-family-systems-perspective-for-autism-ptsd/ https://opendoorstherapy.com/understanding-autism-therapy-california-internal-family-systems-ifs/ and there was a presentation on it in last years IFS conference as well. I have ADHD myself, happy to chat more about it...

Can you explain how this seems similar to Scientology?