They're high in the chain of command

Usage examples of hierarchs.

A group of hierarchs indeed was waiting when the royal party disembarked.

And indeed he felt those gentle rhythms settling over him as he was conducted by the hierarchs through the small quiet harbor town to the royal lodging known as the Seven Walls.

All about them were their closest aides and counsellors, the high spokesman Sleet on one side of the Pontifex and the lady Carabella on the other, and Alsimir and Stimion flanking the Coronal, and a little cluster of hierarchs, Lorivade and Talinot Esulde and some others, about the Lady.

He and the other Hierarchs are bending all their thought to locating it.