'Founders effect' resulting in a more universal phenotype.
Blonde or black hair, tall and lean often over 6'5“ with some reaching 7'.
Blue and Green eye color.
Tanned to dark skin.
Gender ratio has drifted to 1:2
Rather than warrens they typically only have familial groups roughly four to five generations 'deep' living together, they call them 'Argaras'. Due to the nature of their continent of origin anymore mouths to feed would create a strain on local resources thus certain generations were expected to leave and go found their own holdfasts.