Working Class / Left wing football clubs? Watch
Probably AFC Wimbledon.
Real Man U supporters probably (those in Manchester or brought up there, not the plastic glory seekers who probably have no political opinions).
UPDATE: When you said Man U for some reason I thought you meant FC United of Manchester, not Man U. My bad.
People around the world think of Liverpool firstly as the Merseyside team who are left-wing but fully agree that Everton are the more community based team, and have a stronger support with the city of Liverpool, as oppose to Liverpools larger nationwide following, therefore making Everton more of the working class / left wing team on Merseyside