First of all, if it's science that interests you, you would do well to read up on the lack of probative value lay evidence, evidence that hasn't been gathered and analyzed utilizing the scientific method, has. You would do well to read up on confirmation bias, particularly how confirmation bias when paired with lay evidence leads to wholly unreliable conclusions.
Second, you might also note that all of those scientists you listed lived in times of great calamity that resulted worldwide food scarcity, times when there was global famine, and in the few places where there wasn't, food was still so scarce that it was being rationed.
Third, what you're saying is derivative, and I think you know that. You're echoing the discredited and scientifically disproven eugenic ramblings of William Sheldon's somatotype and constitutional psychology wherein he touted that the quality of personality, work ethic, temperament, and even intelligence could be accurately deduced by body type. Going beyond deduction, Sheldon professed body type induced the quality of those traits. According to Sheldon, such was the corollary that the quality of those traits couldn't just be deduced from body type but that body type induced the quality of those traits, touting that body type determined human behavior, determined personality, determined temperament, determined intelligence.
Sheldon categorized people into three types: ectomorphs, endomorphs, and mesomorphs, ectomorphs being tall and skinny and being of the highest intelligence; mesomorphs being taller than most, having more lean muscle than most, being of above average intelligence, being socially normative, and being hardworking; and endomorphs being the great unwashed masses of short, fat, lazy, stupid, stubby-limbed, antisocial subhumans.
In case you haven't figured it out, while Sheldon was American, he was a Nazi. He was vocally pro-Hitler, advocated for "racial hygiene," and actively worked to bring about the rise of an American Nazi Party. He wasn't a scientist but was a racist and a propagandist parading as a scientist.