Igboid languages constitute a branch of the Volta–Niger language family. The subgroups are: Ekpeye Nuclear Igboid: Igbo, Ikwerre, Ika, Ngwa, Izii–Ikwo–Ezza–Mgbo, Ogba,Ishiagu and Ukwuani-Aboh-Ndoni Williamson and Blench conclude that the Nuclear Igboid languages (Igboid apart from Ekpeye) form a "language cluster" and that they are somewhat mutually intelligible. However, mutual intelligibility is only marginal, even among the Izii–Ikwo–Ezaa–Mgbo languages. Igboid speakers are about 60 million people. Names and locations Below is a list of language names, populations, and locations from Blench (2019). See also List of Proto-Igboid reconstructions (Wiktionary) References Blench, Roger. 2016. A reconstruction of the phonology of proto-Igboid. Volta–Niger languages