*Edit: I checked some of the stuff more out in detail. While some concepts on this are valid and backed up by sience, others like RSD are not. Use this as a springboard for learning, not as a valid source in itself. Yes it says so in the corner already. But spelling it out might help.
People are more complicated then a diagram from the internet. Never forget that.
What I find interesting about this graphic is that many traits that don’t overlap should:
Autism and ADHD both need routine, the former by nature, and the latter to nurture better outcomes
Motor skills crossover in gifted kids and autism
People with autism famously do NOT NOTICE details, so it’s strange to see that highlighted
I think easily bored can fit in all 3 shared traits
Hyper-focus is a crossover for Autism and ADHD
Since ADHD and Autism literally crossover commonly in the same human being, I’d think there would be more shared traits than is listed above