Cannot swear to the accuracy but I found these.
Utiger and Bulgar names;

KURT/KUBRAT
ALKHASI
EALKH
OLKH
ALKH
KHUMSKHI
KHONSA
DOKHS
SHEKHTEM
KAVKHAN
AVITOKHOL
ASPARUKH
VINEKH
ESKHACH
OKHSUN
SANDILKH
KHINIALON
ERNICH
GOSTUN
BEZMER
ASPAROUKH
TERVEL
SEVAR
KORMISOSH
VINEKH
TELETZ
OUMOR