No-Coverage Answer
The term "Khazarian" does not appear in any of the 834+ transcripts in the Taygetan contact material. The Khazar empire, Khazarian mafia, or any connection between Khazar history and the Cabal control structure is not discussed.
The material extensively covers the Cabal control structure from other angles — Illuminati, Jesuits, bloodline families, three-letter agencies, the relationship between the Earth Cabal and the Galactic Federation — but the Khazarian framing specifically used in some alternative-history circles is absent.
See also: Are there reptilians on Earth in positions of power? and Who designed the 3D Matrix and why? (cover the Cabal control structure from the Taygetan perspective)
Searched: All 834+ transcripts (grep for "Khazar," "Khazarian"). Zero results.