The Barman language is a recently discovered Boroic language spoken by the Barman Kacharis.
Ethnologue (21st edition) include Riang and Usoi as separate languages within the Kokborok language cluster.
Jacquesson (2017:112)[2] also includes Bru (also known as Riang) as a Bodo language.
Notes
^Post, W.; Burling, Robbins (2017). "The Tibeto-Burman languages of Northeast India". In Graham Thurgood; Randy J. LaPolla (eds.). Sino-Tibetan Languages. Taylor & Francis.
^Jacquesson, François and van Breugel, Seino (2017). "The linguistic reconstruction of the past: The case of the Boro-Garo languages." In Linguistics of the Tibeto-Burman Area, 40, 90-122.doi:10.1075/ltba.40.1.04van [Note: English translation of the French original: Jacquesson, François (2006). ‘La reconstruction linguistique du passé: Le cas des language Boro-Garo’. Bulletin de la Société de Linguistique de Paris 101(1): 273–303.]
References
George van Driem (2001) Languages of the Himalayas: An Ethnolinguistic Handbook of the Greater Himalayan Region. Brill.
Joseph, U.V.; and Burling, Robbins. 2006. Comparative phonology of the Boro Garo languages. Mysore: Central Institute of Indian Languages Publication.