Many of the languages have highly elaborate phonology systems that make comparison with poor data difficult.

Below is a list of major Plateau branches and their primary locations (centres of diversity) based on Blench (2019).

For instance, Roger Blench (2022) notes that Beromic is more internally diverse than all of West Chadic A3.

[5] Most of the branches are discrete constituents, though Central is a residual grouping and there are doubts about some of the purported Ninzic languages.

Some Proto-Plateau quasi-reconstructions proposed by Roger Blench (2008) are: Comparison of numerals in individual languages:[12] This article incorporates text available under the CC BY 3.0 license.