Read from the World of Warcraft client build files.
How Grievous Gladiator's Leather Tunic Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear.
Transmog Sets
Grievous Gladiator's Leather Tunic is part of the transmog set Grievous Gladiator's Leather Armor (Rogue only), which the Appearances collection lists in 2 versions. The other 6 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Grievous Gladiator's Leather Tunic Fits
Other Items Named Grievous Gladiator's Leather Tunic
4 other items in the current build are also called Grievous Gladiator's Leather Tunic. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Grievous Gladiator's Leather Tunic
Blizzard numbers items as they are created, so the named items next to ID 100431 (100426 to 100436) were usually added in the same batch as Grievous Gladiator's Leather Tunic: the same quest line, zone, vendor or reward set.