Nehemiah 12:7

Overview - Nehemiah 12
The priests and the Levites which came up with Zerubbabel.
10 The succession of high priests.
22 Certain chief Levites.
27 The solemnity of the dedication of the walls.
44 The offices of priests and Levites appointed in the temple.
Treasury of Scripture Knowledge

Nehemiah 12:7  (King James Version)
Sallu, Amok, Hilkiah, Jedaiah. These were the chief of the priests and of their brethren in the days of Jeshua.

The variation of [Callw ,] Sallu, and [Callay ,] Sallai, is simply caused by the mutation of [Vv,] {wav} and [Ywd,] {yood.}

the chief.
"The chief of the priests" seem to have been the heads of the courses established by David.
1 Chronicles 24:18

of Jeshua
1 ; Ezra 3:2 ; Haggai 1:1 ; Zechariah 3:1