I have no idea why but despite not really having a preference, men about my height (5'4-5'5 or 165 cm ish) always stand out to me. Maybe it's because...
I think people will still use Celtic because they aren't aware of genetics. The average man in the street will still use Celtic for Irish, Scots and...
Interestingly the Dutch were very Insular Celtic like in the Iron Age so very Bell Beaker. R1b-L21 came with the Bell Beakers well before the Celts....