Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Shoulderblade Vambraces Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Shoulderblade Vambraces suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Shoulderblade Vambraces is part of the transmog set Grand Sentinel's Greatplate (Warrior, Paladin and Death Knight only). The other 16 pieces:
Blizzard numbers items as they are created, so the named items next to ID 184135 (184130 to 184140) were usually added in the same batch as Shoulderblade Vambraces: the same quest line, zone, vendor or reward set.