Welsh people: Who overlaps with them?

[Septentrion]

Because British phenotypes like brunns, atlantids, gracile meds, atlanto meds and Kelto Saxons are found more in Kent, especially among working class people who will often resemble the more brunet Welsh.

Gracile Meds and Atlanto - Meds aren’t specifically British phenotypes. They would occur only on individual basis and bear no importance on the overall racial makeup of the British people whether upper or working class. There are four principal phenotypes for the British Isles, the Anglo-Saxon, Brunn, Keltic Nordid and North Atlantid. Three of those phenotypical families belong to the Nordid race. I know some would say, what about the Paleo Atlantid? Well, it is pretty important, but plays a secondary role in comparison to the first four. The main strain for brunet hair in the British Islands is the North Atlantid, in a second place the Paleo Atlantid.

[Septentrion]

I have read in anthro forums that they are predominantly Atlanto-Med and are famous for their dark hairs...but in UK, people from Welsh origin didn't look to me much different from English...

Please stop! Approximately 38% of the Welsh have dark or very dark hair, as a whole the Welsh are the darkest-haired in the British Isles, the Irish comes in the second place (36%), the English and Scotch are about even (overall 30%). Although there are counties in the western English Midlands (Shropshire, Herefordshire, etc...) that are approach Wales in hair darkness.