Varangur isnt just Marauders though. The Sons of Khorgaan are the warrior equivalent, heavy armour, elite. They can even get marks (Brand of the warrior gives brutal => Khorne, guise of the deceiver gives headstrong => tzeentch or slaanesh, Mask of the Reaper gives lifeleech=> Nurgle.)
As to lizardmen, pretty much everything barring Slann can be used in the Salamanders list, I think.