Banja la Nilo-Saharan likuimiridwa ndi magulu: Songhai, Sahara, Shari-Nile, komanso mitundu iwiri yosiyana zinenero Maba ndi For (Fur). The Songhai ikuphatikizapo Songhai yoyenera, komanso Djerma ndi Dandy, omwe amakhala m'mphepete mwa nyanja ya Niger; ku gulu la Sahara – kanuri, tuba (tibbu) ndi zagava, okhala m'mphepete mwa nyanja ya Chad ndi Central Sahara. Gulu lofunika kwambiri la Shari-Nil m'banjali limaphatikizapo anthu a Kum'mawa kwa Sudan (Dinka, Puer, Luo, Bari, Lotuko, Masai, Nuba, kapena Nubians, etc.), omwe poyamba adaphatikizidwa m'banja lodziimira la Nilotic; Anthu aku Central Sudanese (Bagirmi, Morumadi), Berta ndi Kunama. Anthu a gulu limeneli amakhala kumpoto kwa Zaire ndi kum’mwera kwa Sudan. Zilankhulo za Morumadi zimalankhulidwa ndi mafuko a Pygmy (Efe, Basua, etc.).