Jinghpaw and Konyak are likely part of a wider Sal (Brahmaputran) language grouping that also includes the Bodo–Garo and Dhimal branches.
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.
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.
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, Sal, and Kuki-Chin–Naga groupings, and possibly Nungish.