Siouan languages
Siouan or Siouan–Catawban is a language family of North America that is located primarily in the Great Plains, Ohio and Mississippi valleys and southeastern North America with a few other languages in the east.
Siane language
Named dialects are "Hakoa, Kolepa, Yamofowe, Komongu, Komoigaleka, Kemanimowe, Ona, Keto, Laiya, Fowe, Olumba, Lambau, Alango, Yandime, Wando." Komongu and Lambau are the literary standards.