13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Anubisath Warbringer43–45
Silithid Flayer40–44
Qiraji Brigadier General60
Greater Anubisath Warbringer58–59
Greater Silithid Flayer54–57
Qiraji Lieutenant General63
Supreme Anubisath Warbringer62
Supreme Silithid Flayer60–61
Winter Reveler40Hillsbrad Foothills
Officer Vu'Shalay55Darkspear CommendationsOrgrimmar
Officer Lunalight55Darnassus CommendationsDarnassus
Officer Porterhouse55Gnomeregan CommendationsIronforge
Officer Ironbeard55Ironforge CommendationsIronforge
Officer Redblade55Orgrimmar CommendationsOrgrimmar
Officer Maloof55Stormwind CommendationsStormwind City
Officer Thunderstrider55Thunder Bluff CommendationsThunder Bluff
Officer Gothena55Undercity CommendationsUndercity
Resonating Crystal1Thousand Needles
Greater Resonating Crystal1Thousand Needles
Major Resonating Crystal1Tanaris
Colossus Researcher Sophia60Silithus
Colossus Researcher Nestor60Silithus
Colossus Researcher Eazel60Silithus
Lesser Resonating Crystal1The Barrens
Minor Resonating Crystal1The Barrens
Qiraji Lieutenant28
Minor Anubisath Warbringer25
Minor Silithid Flayer21–23
Eroded Anubisath Warbringer16–17
Faltering Silithid Flayer11–14
Qiraji Officer18–20
Qiraji Officer Zod20
Qiraji Lieutenant Jo-rel28
Qiraji Major He'al-ie50
Qiraji Brigadier General Pax-lish60
Lieutenant General Nokhor63
Valadar Starsong55Coin of Ancestry CollectorMoonglade
Elder Bronzebeard60Ironforge
Lunar Festival Herald55Orgrimmar
Lunar Festival Emissary55Stormwind City

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.