I think the East Asian 5% is a feeler to get people interested in that Genome of Portugal project. North Europeans have more Steppe herder ancestry than South Europeans, EHG is derived from ANE, and they form a major ancestry of the Steppe Herders. The SNP for blond hair was found in one of the Afontova Gora remains, they were ANE people. My guess, I have seen two reconstructions of ANE, is that they looked like Native Americans with large noses, and less Mongoloid facial features. The ANE weren't Mongoloid or Caucasoid but they contributed to both West Eurasians, and some East Eurasians. I would not atribute blondism, that is light pigmentation, blue eyes and blond hair to ANE but to the mixing of Neolithic farmers with hunter gatherers and then Steppe herders, that accelerated light pigmentation from the farmers and CHG, with blue eyes the WHG and blond hair from the descendants of ANE, the EHG. Southern Europeans are mostly Anatolian farmer ancestry with WHG ancestry and less Steppe herder ancestry, so blondism was not so successful.