Anyone know about Priests in Judaism? I'm writing an essay on it and I can't seem to figure out all the different sects of Jewish Priests.

At the very least can someone confirm this:

there were four chief priests:
Aaron
Eleazar
Phinehas
Abishua

Aaron was the Tribe of Levi (Levites) and he was the original High Priest

Then there was also the Temple Priests, I know nothing about them yet.

Is there a difference between Kohen / Kohein / Cohen?

found this online and it was helpful, but I dont think these are all different types of priests and it doesn't specify which ones are:

Rabbi: Teacher and decider of matters of religious law
Chazan: Cantor, who leads congregation in prayer
Gabbai: Volunteer who assists with Torah readings
Kohein: Descendant of Aaron, the original High Priest
Levi: Descendant of the biblical Levites
Rebbe: The leader of a Chasidic community
Tzaddik: A righteous person with spiritual power


Any additional info or sects of priests I might be missing?