Humans began the Knights of the Silver Hand, and they remain the bulk of its membership. They are proud of the paladins' contribution to the Second and Third Wars, though they are shamed at Arthas' betrayal. After such an enormous breach of trust, the paladins have resolved anew to eliminate all traces of corruption in their ranks. Many see humans as the quintessential paladins. The iconic human paladin marches into combat, cloak flowing, hammer pounding, and faith unwavering.
Ironforge dwarves, closely allied with the Humans, have developed strong bonds, and some of them joined the Order of the Silver Hand.
Wildhammer Clan paladins and priests of the Holy Light may exist, but are about as rare as Ironforge druids.