13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Innkeeper Vizzie30InnkeeperWinterspring
Azzleby58Stable MasterWinterspring
Crimson Hammersmith60Stratholme
Black Guard Swordsmith61–62Stratholme
Restless Soul1Stratholme
Freed Soul1Stratholme
Xai'ander35WeaponsmithAshenvale
Maethrya55Hippogryph MasterWinterspring
Yugrek55Wind Rider MasterWinterspring
Egan59Eastern Plaguelands
Spirit of Trey Lightforge53
Undead Postman57–58Stratholme
Postmaster Malown60Stratholme
Myolor Sunderfury53Ironforge
Ironus Coldsteel54Special Weapon CrafterIronforge
The Scourge Cauldron1Western Plaguelands
Green Skeletal Warhorse1Tirisfal Glades
Krathok Moltenfist53Orgrimmar
Okothos Ironrager52ArmorsmithOrgrimmar
Borgosh Corebender51WeaponsmithOrgrimmar
Bloodvenom Post Brave55Felwood
Shi'alune56Kaerbrus' PetFelwood
Nixxrak54Heavy Armor MerchantWinterspring
Blixxrak55Light Armor MerchantWinterspring
Wixxrak51Weaponsmith & GunsmithWinterspring
Xizzer Fizzbolt57Engineering SuppliesWinterspring
Lunnix Sprocketslip54Mining SuppliesWinterspring
Himmik60Food & DrinkWinterspring
Evie Whirlbrew58Alchemy SuppliesWinterspring
Qia51Trade Goods SuppliesWinterspring
Everlook Bruiser57Winterspring
Lilith the Lithe55Winterspring
Kilram58Winterspring
Seril Scourgebane57Winterspring
Argent Defender55The Argent DawnTirisfal Glades
Shatterspear Drummer56Darkshore
Draenei Exile42Swamp of Sorrows
Eva Sarkhoff54Western Plaguelands
Lucien Sarkhoff55Western Plaguelands
Kerlonian Evershade20Druid of the ClawDarkshore

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.