Re ; “a handful of Bronze Age forefathers, due to a ‘population explosion’ several thousand years ago”
So how many children do you think a guy could father in a 700-800 year lifespan? Especially with more than one wife?
Learn some math. Charlemagne lived 1200 years ago. That’s roughly 40 generations. So you had 2**40 (about 1 trillion) ancesors...far more than the population of the world today. So each of us is a descendant of Charlemagne many, many times. Similarly most English speakers are descendants of Henry VIII...but none of the first Queen Elizabeth.