13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Scorpid Hunter40–41Tanaris
Scorpid Tail Lasher43–44Tanaris
Scorpid Dunestalker46–47Tanaris
Starving Blisterpaw41–42Tanaris
Blisterpaw Hyena44–45Tanaris
Rabid Blisterpaw47–48Tanaris
Roc41–43Tanaris
Fire Roc43–45Tanaris
Searing Roc47–49Tanaris
Surf Glider48–50Tanaris
Giant Surf Glider48–50Tanaris
Coral Shark46–47Dustwallow Marsh
Sand Shark14Durotar
Hazzali Wasp47–48Tanaris
Hazzali Stinger49–50Tanaris
Hazzali Swarmer49–50Tanaris
Hazzali Worker47–48Tanaris
Hazzali Tunneler48–49Tanaris
Hazzali Sandreaver48Tanaris
Centipaar Wasp47–48Tanaris
Centipaar Stinger48–49Tanaris
Centipaar Swarmer49–50Tanaris
Centipaar Worker48–49Tanaris
Centipaar Tunneler47–48Tanaris
Centipaar Sandreaver49–50Tanaris
Sea Elemental48–49Feralas
Sea Spray47–48Feralas
Watchmaster Sorigal29Duskwood
Land Rager45–47Tanaris
Coast Strider48–49Tanaris
Deep Dweller47Tanaris
Dune Smasher48–49Tanaris
Raging Dune Smasher49–50
Dunemaul Ogre45–46Tanaris
Dunemaul Enforcer46–47Tanaris
Dunemaul Ogre Mage46–47Tanaris
Dunemaul Brute46–48Tanaris
Dunemaul Warlock47–48Tanaris
Watcher Biggs33Swamp of Sorrows
Noboru the Cudgel39Swamp of Sorrows

Classic reference data from QuestieDB (Forever data, commit c5de61a), with positions on Forever's zone maps. It doesn't confirm that an NPC, location, quest or item is in Forever.