107 cosmetic armor items
The Forever catalog holds 107 cosmetic armor items, topping out at item level 60 with Bloodsail Admiral's Hat, Sturdy Female Dwarf Mask, Sturdy Female Gnome Mask. Every armor piece in the World of Warcraft: Forever catalog, the Classic Era pieces and the ones Forever adds: cloth, leather, mail, and plate across every slot, plus shields and off-hands. Sorted by item level; filter by armor type. Each item page holds the tooltip, the vendor value, and the auction house price on every market once scans arrive.
By quality: 66 common, 33 uncommon, 7 rare, 1 poor. Item levels run from 1 to 60, for characters from level 1 to 1. 67 bind when picked up and never reach the auction house; 40 can be listed.
The highest item levels here: Bloodsail Admiral's Hat (60), Sturdy Female Dwarf Mask (45), Sturdy Female Gnome Mask (45), Sturdy Female Human Mask (45).
Professions make 5 of them: Tailoring (4), Leatherworking (1). 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.