“...this would presume a link between the western world and the Third Dynasty.”
I think it just means that Tut and many Europeans share a common ancestor.
That’s another possibility. Depends on where the ‘closest ancestor’ turns up, and their genealogy.
Wouldn’t it be wild if Queen Elizabeth were the closest relative to King Tut?
Looks like you are right. It’s Celtiberian distribution.
Man, I wish I were as smart as you.