Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Rumblestone Gauntlets Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Rumblestone Gauntlets suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Rumblestone Gauntlets is part of the transmog set Bloodforged Battleplate (Warrior, Paladin and Death Knight only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 137355 (137350 to 137361) were usually added in the same batch as Rumblestone Gauntlets: the same quest line, zone, vendor or reward set.