Hamitic
Another way they classified people into hamitic or non-hamitic is by ethnic roots. Negroid people are perceived as Shemetic as opposed to the Hamitic Ethiopian, Sudanese, and some other West African ethnic groups as attested by the genealogy of ancient ethnic lineages.  For example, a person who has ancestry from Rome would be considered closer to a Hamite than a person whose ancestry is in Africa. Ironically, the Hamites include some of the darkest sub-Saharan African groups like the Nilotes that were considered closest to Europeans as opposed to the Chadic sub saharan Africans who share a common RB1 lineage.