I believe below are the settlements without recruitable generals

Gerrha(Gerrhaia_Arabia)
Terhazza(Eremos)
Augila_settlement(Augila)
Petra(Sinai)
Meroe(Kush)
Homna(Maketa)
Bostra(Nabataia)
Axum(Diamat)
Carna(Main)
Ubar(Zufar)
Patala(Sind)
Sabata(Hadramaut)
Maryab(Saba)
Tamane(Qataban)

That because EB team did not have enough information about what kind of Arabian Client Ruler Bodyguard Unit that have been used at that time. If historian come with information, the team will change it.....