Which language groups are included in the Tibetic division?

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Within the study of the Sino-Tibetan language family, the classification of the Tibetic division remains a subject of scholarly discussion. Some linguists suggest that designating Tibetic as a formal division may be premature, proposing instead that its subdivisions serve as the primary classificatory peaks around which related languages cluster.1

According to this perspective, the groups often associated with the Tibetic division include:

Scholars note that the field has not yet reached a stage where definitive boundaries can be established or where a common ancestral "Proto-Tibetic" can be undisputedly reconstructed. Consequently, these groups are currently viewed as the most effective way to organize the languages within this branch of the family.1