Read from the World of Warcraft client build files.
How Marsh Hopper's Spaulders Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Marsh Hopper's Spaulders suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 4 items nearest to Marsh Hopper's Spaulders (item level 437) in item level among Armor > Leather, Shoulder slot, from item level 330 to 545.
Marsh Hopper's Spaulders is part of the transmog set Khaz Algar Trophymaster's Leather Armor (Rogue, Monk, Druid and Demon Hunter only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 223938 (223933 to 223943) were usually added in the same batch as Marsh Hopper's Spaulders: the same quest line, zone, vendor or reward set.