The East Cushitic languages are a branch of Cushitic within the Afroasiatic phylum. Prominent East Cushitic languages include Oromo, Somali, and Sidama. The unity of East Cushitic has been contested: Robert Hetzron suggested combining the Highland East Cushitic languages with the Agaw languages into a "Highland Cushitic" branch, while most other scholars follow Martino Mario Moreno in seeing Highland and Lowland as two branches of East Cushitic.