Their is more to blood type than meets the eye, strongly related to immune system. which in turn may tie in with autism six siblings four on spectrum all share same blood type AB positive.
RH neg is only 35% probability more for ADHD than ASD, so genetics do play a role but seem to not be only factor.
Other blood types when mixed at birth do also pose health challenges but RH by far being the worst. I've seeing rumour eyptians were RH which may well be true, but not as an alien species. With certain tribes being dominant in some parts of world, and of course brown eyes being normal, from pyramids of Geser to Aztec. melanomian issue usually resides with blue eyed Europeans, and green eyes were less mutated and in lesser numbers.
Before stumbling into this I was looking at possibility that theory of blood type O is that some tribes may had different blood lines, and usually mix which created health issues but also that usually original tribe creates a culture (creators)so whilst others with offspring borrow ideas, they appear to not invent ideas back to original tribe or blood type (hunters)
EG. Mostly Asians (possibly RH)invent their culture, its borrowed but never innovate-injected into by other tribes.
Whilst innovation-lending does cross cultures. Many cultures seem to ONLY leverage from this, even heightening concept of 'jagger' or hunter perfecting ideals of others.
ADHD seems more adapted to social guesses and language, combined with ASD lends for better masking. But ASD on its own seems be social deficit compensated by intelligence. So diversity appears to create, NT more stable at refining these systems and regulating into life patterns. Or something to that effect.
When we look at a country we see sum of creators of that society, often NT that dominates and displays this. It's most noticeable in concept of training, where clearly some don't possess rhythm of dance but rather forge it enough. Some don't have intellectuals but studied long enough to get job done, but don't possess ability to create own doctorate. These people are like actors, representatives of culture but honestly doubt Tom cruise has IQ to fix/invent machines in his movies, but he's action character and society is content with that. When we turn TV on and media portrays everything mixed up, we get many unhappy people who don't fit in with unreasonable standards.
Also hormones and drugs used by athletes to enhance performance, so many factors at play.