Blench (2011) suggests that Central Sudanic influenced the development of the noun-class system characteristic of the Atlantic–Congo languages.

[2] Half a dozen groups of Central Sudanic languages are generally accepted as valid.

Starostin (2016)[4] finds support for Eastern Central Sudanic (Lendu, Mangbetu, Lugbara, etc., concentrated in the northeast corner of DR Congo) but not for the western division, which would include Bongo–Bagirmi and Kresh scattered across Chad, the CAR, and South Sudan.

Mangbetu (2–3) Mangbutu–Lese (5) Lendu (2–3) Moru–Madi (10) Bongo–Bagirmi (40 languages) Birri (1) Kresh (2) Starostin (2011) notes that the poorly attested language Mimi of Decorse is suggestive of Central Sudanic, though he provisionally treats it as an isolate.

Boyeldieu (2010) states that the inclusion of Kresh has yet to be demonstrated, but Starostin (2016) finds good support, with Birri being its closest relative.