the leader

1 Chronicles 9:20
In earlier times Phinehas son of Eleazar had been in charge of the gatekeepers, and the LORD was with him.

2 Kings 11:4, 9
Then in the seventh year, Jehoiada sent for the captains of hundreds, the Carites, and the guards, and had them brought into the house of the LORD. There he made a covenant with them and put them under oath. He showed them the king's son . . .

2 Kings 25:18
The captain of the guard also took away Seraiah the chief priest, Zephaniah the priest of the second rank, and the three doorkeepers.

Aaronites

1 Chronicles 6:49-57
But Aaron and his sons did all the work of the Most Holy Place. They presented the offerings on the altar of burnt offering and on the altar of incense to make atonement for Israel, according to all that Moses the servant of God had commanded. . . .

1 Chronicles 27:17
over the Levites was Hashabiah son of Kemuel; over Aaron was Zadok;