13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Teldrassil Sentinel55Teldrassil
Zizzek22FishermanThe Barrens
Dalaran Brewmaster15–16Silverpine Forest
Dalaran Miner15Silverpine Forest
Sewer Beast50Stormwind City
Barithras Moonshade14Darkshore
Therylune17Darkshore
Therysil17Ashenvale
Miner Johnson19The Deadmines
Lyrai9General SuppliesTeldrassil
Khardan Proudblade8WeaponsmithTeldrassil
Keina10BowyerTeldrassil
Janna Brightmoon9ClothierTeldrassil
Freja Nightwing9Leather Armor MerchantTeldrassil
Andiss10Armorer & ShieldcrafterTeldrassil
Alyissia11Warrior TrainerTeldrassil
Frahun Shadewhisper11Rogue TrainerTeldrassil
Shanda10Priest TrainerTeldrassil
Ayanna Everstride10Hunter TrainerTeldrassil
Mardant Strongoak11Druid TrainerTeldrassil
Kyra Windblade19Warrior TrainerTeldrassil
Jannok Breezesong20Rogue TrainerTeldrassil
Laurna Morninglight21Priest TrainerTeldrassil
Dazalar20Hunter TrainerTeldrassil
Kal22Druid TrainerTeldrassil
Cyndra Kindwhisper28Journeyman AlchemistTeldrassil
Malorne Bladeleaf17HerbalistTeldrassil
Nadyia Maneweaver30Journeyman LeatherworkerTeldrassil
Alanna Raveneye29Journeyman EnchanterTeldrassil
Androl Oakhand37FishermanTeldrassil
Aldia17General SuppliesTeldrassil
Shalomon18WeaponsmithTeldrassil
Jeena Featherbow19BowyerTeldrassil
Brannol Eaglemoon16ClothierTeldrassil
Sinda20Leather Armor MerchantTeldrassil
Meri Ironweave19Armorer & ShieldcrafterTeldrassil
Narret Shadowgrove16Trade SuppliesTeldrassil
Devrak55Wind Rider MasterThe Barrens
Onu55Ancient of LoreDarkshore
Lordaeron Citizen15Undercity

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.