“Interesting stuff. The more separate peoples stay together in one location, the more blended their genetic DNA becomes The Spanish were in the Americas a mere century longer than the English (fall of Mexico City, 1521 landing at Plymouth Rock, 1620) but their DNA is far more blended with Native and African DNA than descendants of their counterparts of primarily English ancestry . . . in a mere century, less than 1.7% of recorded human history.”
One of my semi white UK/Scot/Wales/Western Europe DNA snowflake relatives described “ what you noted as: “The Spaniards were hornier and most often came over here without wives. So they $crewed a lot more natives and left more mixed blood offspring. Than their white counterparts.
Those horney guys versus the sexually uptight white protestant guys often with a wife and children left wide trails of DNA.
The white couple might have had 20 plus children, but the descendants often had the same white DNA and father and mother.
This same previously unknown DNA relative and I had heard for years of having Cherokee ancestors. Between the two of us we have close to 200 identified on paper Indian relatives and yet zero Indian DNA.
We both also have about 3% African DNA from the same African area.
Yet we can’t find a single African ancestor in just under 50,000 ancestors between the two of us.
The Spaniards and mixed bloods from the Caribbean as you noted had been actively breeding in America since the late 1490’s. As a result, possibly no true Native American Tribes existed in our SE part of what is now America
Even a Patrician blue blooded family like the Bush clan has native Americans intertwined in their New England roots.
My wife is a distant cousin of baseball star Rogers Hornsby descended from a common half-sister of Pocohantas . . . and more than a century later, we have common Cherokee ancestry which married into settler line on the Georgia/Carolina/Tennessee frontiers. There are remote areas still with sizeable Cherokee populations who escaped the forced removal in 1838 either because (a)they were sufficiently intermarried with settlers or (b)in locations too remote and/or numbers too few to bother with rounding up.