Stonehenge is indeed interesting, and finding out that it was EEF like people who made it did come as a bit of a shock to a lot of people.
Primarily Y-DNA I2a, which goes back to WHG (and the Epigravettian Refugium), but with a significant EEF admixture. My interest is primarily historical - Y-DNA can help to track migrations, but is a single thread that gets thinner and thinner the further back it goes. I'm in the Isles Scot/Ire clade (according to my Big Y-700 results):
"Our next sub-sector is the Isles Sc/Ire that stems from Isles Limbo I-FGC20063 branch through I-FT2392 to Isles Sc/Ire I-S7753*. One could say it was by far the most successful of the Isles sector branches thus far. This sub-sector can be distinguished for most tested from other Isles sub-sectors by the STR marker DSY464 having 11-11-14-15. Of course we see variations especially if affected by a recLOH event. The I-S7753 branch node is also known as I-Y4171 and I-FGC20048 and has according to FTDNA 15 SNPs at the node. Still room for discovering new branches and splitting this node. It has two known branches - I-Y23716* and I-Y4142*" -- Wayne Rodney Roberts (I-M223 Project Administrator)
Very few "racially-attributable" traits are carried by the Y-Chromosome. Apparently, however:
"A pedigree of hairy ear rims published in Italy in 1907 indicated holandric inheritance. The recent collection of over 20 pedigrees in India appears to show conclusively that the gene for hairy ear rims is in the Y chromosome. This is further evidence of relationship between the Mediterranean race in Europe and the population of India." --
https://www.science.org/doi/10.1126/science.132.3420.145.a
Despite my Y-DNA ancestors likely having been in northeast Ireland since before the formation of surnames (as evidenced by my very "Irish" surname), according to my Family Finder results: I'm 100% Europe; 47% England, Wales, and Scotland; 21% Scandinavia; 20% Central Europe; and, last
and least, 13% Irish. I partially attribute my relatively minuscule amount of Irishness either to males in my direct paternal line having largely avoided marrying girls of "Irish" descent (as evidenced by Irish maiden names) or that there just weren't many available in the areas where they settled (Pennsylvania and Nebraska), the exception being a great-great-great grandmother (nee Goff). If the Irish tribe had a reservation, I'd be in danger of being voted off of it. And I've likely inherited as many or more Irish genes from my mother's as from my father's side, with a Duhig (Duffy) great-great-grandfather from Ireland. The 21% Scandinavian may come from my paternal great-grandfather having married a girl (nee Nelson) from Denmark.