The sons of Kohath were Amram, Izhar, Hebron and Uzziel. The total number of sons was four.
Aaron and Moses belonged to Amram's family line. Aaron and his family line were set apart forever as the LORD's priests. They had the duty of setting the most holy things apart to the Lord. They offered sacrifices to the Lord. They served him. They gave blessings in his name forever.
The sons of Moses, the man of God, were counted as part of the tribe of Levi
The sons of Moses were Gershom and Eliezer.
Shubael was the oldest son in the family line of Gershom.
Rehabiah was the oldest son in the family line of Eliezer. Eliezer didn't have any other sons. But Rehabiah had a great many sons.
Shelomith was the oldest son of Izhar.
Jeriah was the first son of Hebron. Amariah was his second son. Jahaziel was the third. Jekameam was the fourth
Micah was the first son of Uzziel. Isshiah was his second son.