Sword Dancer, Dervish, Nightblade: Available as free download at http://www.ironcrown.com/ICEforums/index.php?action=tpmod;dl=cat19
Warrior Mage: RMSS Essence Companion, available as PDF at http://guild.ironcrown.com/index.php?main_page=index&cPath=117
Wizard: RMSS Arcane Companion, AFAIK out of print