Here are all the titles I could think of:
Anax of A
Baron of B
Caliph of C
Doge of D
Emir of E
Fuhrer of F
Graf of G
Hetman of H
Imam of I
Jarl of J
Khan of K
Lord of L
Malik of M
Nizam of N
Okolnichy of O
Premier of P
Quaestor of Q
Rajah of R
Sultan of S
Tsar of T
Ustad of U
Voivode of V
Warden of W
(What Begins with X?)
Yang of Y
Zupan of Z
Anax of A
Baron of B
Caliph of C
Doge of D
Emir of E
Fuhrer of F
Graf of G
Hetman of H
Imam of I
Jarl of J
Khan of K
Lord of L
Malik of M
Nizam of N
Okolnichy of O
Premier of P
Quaestor of Q
Rajah of R
Sultan of S
Tsar of T
Ustad of U
Voivode of V
Warden of W
(What Begins with X?)
Yang of Y
Zupan of Z