Lesser Prophet
From Halopedia, the Halo wiki
[[1]] The most Prominant Prophets are of coarse the Hierarchs. However Prophet Councilors Also known as "Lesser Prophets" are extremely important in the covenant Society. They wear Antigrav Belts instead of using Gravity Thrones. When not in the presence of the Hierarchs they appear to wear Amber Crowns set with Gem Stones. They appear to be Slightly higher than Elite Councilors being that the unnamed Prophet in Halo: The Flood ordered the Decapitation of Councilor Soha 'Romalee. They might function as Cardinals do in Modern Roman Catholocism. Being that Hod Rumnt was once a Councilor before Becoming a Hierarch.