13,394 NPCs

Classic reference; current Forever availability is unconfirmed.

NPCLevelTitleZone
Dark Strand Cultist18–19Ashenvale
Dark Strand Enforcer20–21Ashenvale
Dark Strand Adept18–19Ashenvale
Dark Strand Excavator19–20Ashenvale
Forsaken Seeker18–19Ashenvale
Forsaken Herbalist18–19Ashenvale
Forsaken Thug20Ashenvale
Apothecary Falthis22Ashenvale
Darkslayer Mordenthal23Ashenvale
Saltspittle Puddlejumper19–20Ashenvale
Saltspittle Warrior19–20Ashenvale
Saltspittle Muckdweller20–21Ashenvale
Saltspittle Oracle20–21Ashenvale
Foulweald Warrior23–24Ashenvale
Foulweald Pathfinder23–24Ashenvale
Foulweald Den Watcher24–25Ashenvale
Foulweald Shaman24–25Ashenvale
Foulweald Ursa24–25Ashenvale
Foulweald Totemic23–24Ashenvale
Xavian Rogue29–30Ashenvale
Xavian Betrayer28–29Ashenvale
Xavian Felsworn28–29Ashenvale
Xavian Hellcaller29–30Ashenvale
Felmusk Satyr25–26Ashenvale
Felmusk Rogue26–27Ashenvale
Felmusk Felsworn25–26Ashenvale
Felmusk Shadowstalker26–27Ashenvale
Bleakheart Satyr26–27Ashenvale
Bleakheart Trickster27–28Ashenvale
Bleakheart Shadowstalker27–28Ashenvale
Bleakheart Hellcaller26–27Ashenvale
Lesser Felguard23–24Ashenvale
Akkrilus26Ashenvale
Felslayer22–23Ashenvale
Syurana55Trade Goods SuppliesWinterspring
Shadethicket Moss Eater21–23Ashenvale
Shadethicket Wood Shaper23–24Ashenvale
Shadethicket Stone Mover25–26Ashenvale
Shadethicket Raincaller22–23Ashenvale
Shadethicket Bark Ripper26–27Ashenvale

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.