Central Tibeto-Burman languages
Central Tibeto-Burman or Central Trans-Himalayan is a proposed branch of the Sino-Tibetan language family proposed by Scott DeLancey (2015) on the basis of shared morphological evidence. DeLancey (2018) considers Central Tibeto-Burman to be a linkage rather than a branch with a clearly nested internal structure. DeLancey's Central Tibeto-Burman group includes many languages in Matisoff's (2015: 1123-1127) proposed Northeast Indian areal group, which includes Tani, Deng (Digaro), “Kuki-Chin–Naga”, Meithei, Mikir, Mru, and  Garo, Konyak Naga, Bodo–Kachari people

Languages
DeLancey considers there to be strong morphological evidence for the following Tibeto-Burman branches being part of Central Tibeto-Burman. Sal:  Garo language, Jinghpaw, Konyak language, Bodo–Kachari people
Lushai-Naga
Meitei
Meyor

Jinghpaw and Konyak are likely part of a wider Sal (Brahmaputran) language grouping that also includes the Bodo–Garo and Dhimal branches. DeLancey accepts this grouping and calls it Bodo- Garo-Konyak-Jinghpaw (BGKJ). DeLancey (2015) notes that Bodo–Garo languages do not have much of the conservative morphology present in Jinghpaw, since Bodo–Garo has undergone extensive creolization during the Kamarupan period. The Kuki-Chin branch is often considered to be part of a wider Kuki-Chin–Naga grouping that also includes the Ao, Angami–Pochuri, Tangkhulic, and Zeme branches. DeLancey (2015) suggests that some or all of the "Naga" branches, namely Ao, Angami–Pochuri, Tangkhulic, and Zeme, may also belong to Central Tibeto-Burman. DeLancey (2015) also considers the possibility of the Nungish branch being part of Central Tibeto-Burman. However, James Matisoff (2013) considers similarities between Jingpho and Nungish to be due to contact. Thus, Nungish is not particularly closely related to Jingpho, and is not a Sal language. On the other hand, Matisoff (2013) notes that Lolo-Burmese, particularly Burmish, appears to be more closely related to Nungish than to Jingpho. Taking all of these language branches into account results in Central Tibeto-Burman consisting of the Meyor, Garo-Konyak-Bodo-Jinghpaw, and Kuki-Chin–Naga groupings, and possibly Nungish. Question marks (?) signify uncertain or unconfirmed membership of a language group within Central Tibeto-Burman. Central Tibeto-Burman
Nungish? Meyor–Miju
Sal (Bodo-Garo-Konyak-Jinghpaw )
Bodo–Kachari people
Garo 
Konyak
Kachin–Luic
Dhimal? Kuki-Chin–Naga
Kuki-Chin
Ao? Angami–Pochuri? Tangkhulic? Zeme? Evidence
DeLancey (2015) lists the following morphological features shared by different Central Tibeto-Burman subgroups. Jinghpaw and Nocte-Tangsa
Cislocative r- verbal operator
Perfective glottalization

Jinghpaw and Northwest Kuki-Chin (Monsang-Moyon)
Change-of-state s- prefix on agreement words
Plural m- prefix on agreement words
Copula ni as a verbal operator

Furthermore, Monsang-Moyon (Northwest Kuki-Chin), Nocte-Tangsa, and Meyor all share a k- copula. 