Interesting. I am not sure why there is any surprise at genetic diversity in Italia at that time. It was always a homogeneous area without an indigenous core population.
From the site, this was interesting also:
https://www.heritagedaily.com/2021/12/ancient-dna-reveals-the-worlds-oldest-family-tree/142340
Thx, they sound like some of my relatives. ;^)
https://www.freerepublic.com/focus/chat/4026185/posts
and these folks too:
https://www.youtube.com/watch?v=6R6YjNmPGc8&t=30