Glenn is totally a rogue with the Catch Off-Guard feat chain.

Is Rick a fallen Paladin?

Glenn can track to and he knows how to Scout. I see him as more Ranger then Fighter, cause he is not straight up tough and superioly skilled in combat as a fighter would be. But in all honesty we could have this argument all day long. LOL

Darryl I see as an even cross class split between Barbarian and Ranger.