13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Herald Moonstalker3Darnassus
Harbinger Balthazad3Undercity
Warcaller Gorlach3Orgrimmar
Bluff Runner Windstrider3Thunder Bluff
Arikara28VengeanceThousand Needles
Arnak Grimtotem29Thousand Needles
Sindrayl55Hippogryph MasterMoonglade
Blackhand Armorsmith59Blackhand Legion
Goraluk Anvilcrack61Blackhand Legion ArmorsmithBlackrock Spire
Lorekeeper Polkelt60Scholomance
Andorhal Tower One1Western Plaguelands
Andorhal Tower Two1Western Plaguelands
Andorhal Tower Three1Western Plaguelands
Andorhal Tower Four1Western Plaguelands
Winterfall Runner57Winterspring
Aurius60Stratholme
Lorax61Winterspring
Shatterspear Troll57Darkshore
Kelek Skykeeper57Emerald CircleFelwood
Taronn Redfeather50Emerald CircleFelwood
Greta Mosshoof59Emerald CircleFelwood
Tenell Leafrunner62Emerald CircleFelwood
Ivy Leafrunner63Emerald CircleFelwood
Pamela Redpath1Eastern Plaguelands
Marlene Redpath10Western Plaguelands
Succubus Minion40Stranglethorn Vale
Haleh62Winterspring
Dargh Trueaim25Hunter TrainerLoch Modan
Joseph Redpath60Eastern Plaguelands
Ghost of the Past55
Wizlo Bearingshiner31Thousand Needles
Nessy62Deeprun Tram
Decrepit Guardian55–56
Horgus the Ravager60Eastern Plaguelands
Naga Siren56Deeprun Tram
Jeziba58Western Plaguelands
Quixxil53Un'Goro Crater
Legacki57Winterspring
Scarlet Hound52–53Western Plaguelands
Frostwolf50–51Alterac Valley

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.