What is considered a basic and advanced class?

ie

Basic Random Town = Citizen, ???, ???
Advanced Random Town = Sheriff, ???, ???

same for Third Party and Mafia.

I also need to know what a "power role" is.

Trying to learn what everything means so I can be a good host.


Whoever answers this first in completeness and in accuracy will be given a FREE game via Steam out of a list of games I have available to give.

I believe effort should be rewarded.