>> Also, the Vikings in Newfoundland discovered only extremely hostile and aggressive natives. There was no chance to really leave any progeny. All the Vikings left, or died, as far as is known. If a few Vikings “went native” they would not have left a discernable DNA footprint. <<
Actually, the Vikings penetrated DEEPLY into North America. I don’t know if the team name, Minnesota Vikings, was named for later Scandinavian immigrants, but the Vikings DID reach Minnesota. And enough went native to give the tribes that gave me a very small amount of Indian hair a propensity for red hair and creation myths similar enough to Christian ones to inspire idiot ufologists.
The Diocese of Greenland (I know, not L’anse aux Meadows, but much closer to Newfoundland than Iceland) included Labrador and existed until shortly before Christoper Columbus, 500 years later. In fact, LEIF ERICSSON* WAS A CATHOLIC BISHOP. (*Around these parts, we go with Erikson, but it’s legit.)
The Minnesota Vikings are still hotly disputed. “Rune stones” are probably faked, other evidence is apocryphal.
Makes for a good story, though, and certainly it’s possible unknown Vikings penetrated very far into North America.
“Minnesota’s Kensington Runestone: An ancient Viking secret or a fake artifact?”
https://mysteriesrunsolved.com/2021/09/kensington-runestone.html