13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Aurel Goldleaf60Silithus
Xil'xix62Hive'Regal Overlord
Aluntir62Hive'Ashi Overlord
Arakis62Hive'Zora Overlord
Aendel Windspear60Silithus
Viscidus63Ahn'Qiraj
Vekniss Drone60Ahn'Qiraj
Maxima Blastenheimer35Darkmoon Faire CannoneerElwynn Forest
Lord Skwol63Abyssal High CouncilSilithus
Bor Wildmane56Silithus
Earthen Templar60Abyssal CouncilSilithus
Twilight Prophet60Twilight's HammerSilithus
Spoops1Orgrimmar
Jesper1Stormwind City
Anubisath Warder63Ahn'Qiraj
Obsidian Nullifier61Ahn'Qiraj
Mylini Frostmoon55Weapon MerchantFelwood
Qiraji Scarab60Ahn'Qiraj
Qiraji Scorpion60Ahn'Qiraj
Hive'Zara Drone60Ruins of Ahn'Qiraj
Hive'Zara Collector60Ruins of Ahn'Qiraj
Hive'Zara Soldier61Ruins of Ahn'Qiraj
Hive'Zara Sandstalker61Ruins of Ahn'Qiraj
Qiraji Gladiator61Ruins of Ahn'Qiraj
Hive'Zara Wasp61Ruins of Ahn'Qiraj
Hive'Zara Stinger61Ruins of Ahn'Qiraj
Silicate Feeder55Ruins of Ahn'Qiraj
Flesh Hunter62Ruins of Ahn'Qiraj
Hive'Zara Tail Lasher61Ruins of Ahn'Qiraj
Obsidian Destroyer61Ruins of Ahn'Qiraj
Ossirian the Unscarred63Ruins of Ahn'Qiraj
Moam63Ruins of Ahn'Qiraj
General Rajaxx63Ruins of Ahn'Qiraj
Qiraji Swarmguard61Ruins of Ahn'Qiraj
Swarmguard Needler61Ruins of Ahn'Qiraj
Kurinnaxx63Ruins of Ahn'Qiraj
Horde Warbringer60Orgrimmar
Alliance Brigadier General60Stormwind City
Katrina Shimmerstar30Hallow's End TreatsIronforge
Rachelle Gothena30Hallow's End TreatsOrgrimmar

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.