Nisoish languages

The Nisoish or Yi languages, which contains both the Northern Loloish (Northern Ngwi) and Southeastern Loloish (Southeastern Ngwi) branches, are a branch of the Loloish languages proposed by Lama (2012). Northern Loloish and Southeastern Loloish were established by Bradley (1997), while the Nisoish group combining Bradley's two branches was proposed by Ziwo Lama (2012). Lama (2012) refers to Northern Loloish as "Nisoid" or "Nisu–Lope", and Southeastern Loloish as "Axi–Puoid".
Classification history.
In the past, Southeastern Loloish languages had variously been classified as Northern Loloish or Central Loloish, but were later recognized as forming a separate branch of Loloish by Bradley (2002). Jamin Pelkey (2011:368-371) also noted that Southeastern Loloish and Northern Loloish branches are likely to be sister branches with each other. Shortly later, Ziwo Lama's (2012) computational phylogenetic analysis of the Lolo-Burmese languages gave further support to Pelkey's hypothesis. Northern Loloish and Southeastern Loloish languages were also found to constitute a single branch in Satterthwaite-Phillips' (2011) computational phylogenetic analysis of the Lolo-Burmese languages, who considers Nasu, Nosu, Nisu, and Samei as belonging to the same branch.
Languages.
Lama (2012)'s "Nisoish" branch is contains two subgroups, namely "Axi–Puoid" (also known as Southeastern Loloish) and "Nisoid" (also known as Northern Loloish). Lama (2012) gives the following internal phylogeny for the Nisoish branch.
Four of the six Yi languages ("fangyan" 方言) officially recognized by the Chinese government belong to Lama's Nisoish clade.
However, the remaining two of the six officially recognized Yi languages belong to Lama's Lisoish clade.
Lama (2012) lists the following changes from Proto-Loloish as innovations among various branches and languages of Nisoish.
Demographics and varieties.
Wang (2003).
"Yiyu Fangyan Bijiao Yanjiu" (彝语方言比较研究) by Wang Chengyou (王成有) (2003) gives phonological inventories for Yi (Nisoish) languages spoken in the following locations.
YYFC (1983).
YYFC (1983) gives vocabulary lists for Yi (Nisoish) languages spoken in the following locations.