No-Coverage Answer
This specific question is not addressed in the Taygetan contact material. The "-el" suffix does appear in some Taygetan names (Dhor Káal'el) and is connected to the broader Hashmallim/archangel naming convention — the material notes that Taygetan special forces (Hashmallim) filtered into Hebrew and appear in the Bible as "legions of archangels" (400), and Hebrew itself derives from ancient Egyptian-based languages influenced by Taygetan presence. But no transcript addresses whether the "-el" suffix is exclusively Taygetan, shared with other races, or what it specifically means in the Taygetan naming system.
The Karistus are also linked to an "-el" convention through their connection to the Christ/Dhor Kristil concept (232, 234), suggesting the suffix may not be exclusively Taygetan. But this is inference from adjacent material — no speaker directly addresses the question.
See also: Are "fallen angels" just ETs who came down in ships? (covers the Hashmallim/archangel connection and Hebrew linguistic origins)
Searched: All 834+ transcripts, enhanced topic index. No direct treatment of the "-el" naming convention found.