13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Alexandra Blazen45Azshara
Archmage Xylem60Azshara
Captain Vanessa Beltis50Azshara
Lindros47Azshara
Patrick Mills46Azshara
Master Wood60Stormwind City
Deep Lurker47–49The Temple of Atal'Hakkar
Mura Runetotem22Silverpine Forest
Horizon Scout Crewman42Azshara
Chemist Cuely30Undercity
Lathoric the Black52Searing Gorge
Pilot Xiggs Fuselighter45Azshara
Thersa Windsong45Undercity
Sanath Lim-yo50Azshara
Sentinel Dalia Sunblade44Darnassus
Sentinel Keldara Sunblade43Azshara
Ohanko30Two Handed Weapon MerchantThunder Bluff
Nyrill39Xylem's ApprenticeAzshara
Obsidion52Searing Gorge
Halpa30Prairie Dog VendorThunder Bluff
Enslaved Archaeologist46Searing Gorge
Jeremiah Payson30Cockroach VendorUndercity
Xan'tish30Snake VendorOrgrimmar
Ogtinc45Azshara
Warlord Krellian55Azshara
Caravan Master Tset53Azshara
Felix Whindlebolt2Dun Morogh
Dying Archaeologist46Searing Gorge
Falla Sagewind25The Barrens
Twilight Idolater49–51Searing Gorge
Kim'jael46Azshara
Zamael Lunthistle50Searing Gorge
Hakkari Minion45–46The Temple of Atal'Hakkar
Hakkari Bloodkeeper49–50The Temple of Atal'Hakkar
Nilith Lokrav48Searing Gorge
Shade of Hakkar1The Temple of Atal'Hakkar
Raze48Nilith's GuardianSearing Gorge
Shadowsilk Poacher47–50The UndermarketSearing Gorge
Avatar of Hakkar49–50The Temple of Atal'Hakkar
Trade Master Kovic50The UndermarketSearing Gorge

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.