East Bodish
Layers:
Lhokpu substratum
Bodish independent branch
Tibetic superstratum
Source: van Driem
Source (attached spreadsheet):
Hyslop, Gwendolyn (2014). "A preliminary reconstruction of East Bodish". In Owen-Smith, Thomas; Hill, Nathan W. (eds.). Trans-Himalayan Linguistics: Historical and Descriptive Linguistics of the Himalayan Area. Berlin: Mouton de Gruyter. pp. 155–179. ISBN 978-3-11-031074-0.