Read from the World of Warcraft client build files.
How Stormheart Mantle Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Stormheart Mantle suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Stormheart Mantle is part of the transmog set Stormheart Raiment (Druid only), which the Appearances collection lists in 4 versions. The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Stormheart Mantle Fits
Other Items Named Stormheart Mantle
2 other items in the current build are also called Stormheart Mantle. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 247091 (247086 to 247096) were usually added in the same batch as Stormheart Mantle: the same quest line, zone, vendor or reward set.