Which group tends to remain in the core, true Sylviidae family after splits?

Answer

Whitethroats (Sylvia)

The extensive taxonomic reorganization of the Old World warblers, necessitated by molecular findings that revealed the historical Sylviidae to be polyphyletic, resulted in the consolidation of only the most closely related lineages remaining under the core Sylviidae designation. The species that generally constitute this remaining, refined family are those referred to as the Whitethroats, scientifically classified under the genus *Sylvia*. This contrasts with groups like the Reed Warblers and Marsh Warblers, which were definitively moved to separate families (Acrocephalidae and Locustellidae, respectively) because their genetic distances warranted distinct classifications.

Which group tends to remain in the core, true Sylviidae family after splits?
taxonomybirdanimalclassificationwarbler