Read from the World of Warcraft client build files.
How Draconic Gladiator's Silk Robe Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Draconic Gladiator's Silk Robe suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Draconic Gladiator's Silk Robe is part of the transmog set Verdant Gladiator's Silk Armor (Warlock only), which the Appearances collection lists in 2 versions. The other 16 pieces:
Items Numbered Next to Draconic Gladiator's Silk Robe
Blizzard numbers items as they are created, so the named items next to ID 216064 (216059 to 216069) were usually added in the same batch as Draconic Gladiator's Silk Robe: the same quest line, zone, vendor or reward set.