The Lega–Binja languages are part of the Bantu languages coded Zone D.20 in Guthrie's classification, specifically D.24–26, which according to Nurse & Philippson (2003) form a valid clade. According to Ethnologue, Bembe, which Nurse & Philippson were not sure belonged in its traditional group of D.50, is the closest languagee to Lega-Mwenga. The resulting languages are:

Shabunda-Lega (incl. Kanu, Kwami), Mwenga-Lega + Bembe, Songoora

Songoora language

-Notes: Ethnologue reports that "Songoora" includes three "dialects", two of which do not appear to be Songoora. It is not clear how many of them the 1971 population citation refers to....

 (North Binja), Zimba

Zimba language

Zimba is a Bantu language of the Democratic Republic of the Congo. It is not closely related to other languages, unless the divergent dialects Kwange and Mamba are considered separate languages....

(South Binja)