98 polearm weapon items
The Forever catalog holds 98 polearm weapon items, topping out at item level 85 with The Eye of Nerub, The Eye of Nerub, Grand Marshal's Glaive. Every weapon in the Forever catalog, from the vanilla dungeon and raid drops to the new Forever additions, sorted by item level with daggers, swords, staves, polearms, bows, guns, and wands as filters.
By quality: 45 rare, 33 epic, 15 uncommon, 3 poor, 2 common. Item levels run from 1 to 85, for characters from level 1 to 60. 23 bind when picked up and never reach the auction house; 75 can be listed.
The highest item levels here: The Eye of Nerub (85), The Eye of Nerub (83), Grand Marshal's Glaive (80), Grand Marshal's Polearm (80).
One profession makes 7 of them: Blacksmithing (7). The rest drop, are sold by vendors, or come from quests.
Source: World of Warcraft: Forever game data and Blizzard's Game Data API. Updated with each game build.