Wonderful research, Bette. There are so many overlaps for me with Autism and ADHD. I have always assumed the hyperfocus came from my autism and didn't realise it could be an ADHD symptom, too. Either way, I definitely think of it as my superpower.
It is so hard for hyperactive boys in school. Schools are geared toward female energy: sitting still, and less toward the Yang energy of males, regardless of ADHD. Add that into the mix, and I'm surprised any of them survive school. I had to take mine out. Huge congratulations to your niece. And I am so glad to read your brother is also thriving.