*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.
I have an autism diagnosis, and I'm pretty sure I have ADHD as well. Literally almost everything on that chart applies to me in a substantial capacity. I've never sought a clinical diagnosis as an adult, but if I were to I'm fairly certain I would get one.
The ADHD assessments I had in school were all the stare at a screen and hit a button when a dot appears kind. I think they were expecting me to get bored and mess up, but that's the kind of task I'm good a hyper-focusing on short periods of time. One time the assessor told me I couldn't have ADHD because my average reaction time was one of the best she'd ever seen. I think that type of assessment is fundamentally flawed.