Read from the World of Warcraft client build files.
How Mantle of Radiant Glory Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Mantle of Radiant Glory suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Mantle of Radiant Glory is part of the transmog set Battleplate of Radiant Glory (Paladin only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Mantle of Radiant Glory Fits
Other Items Named Mantle of Radiant Glory
2 other items in the current build are also called Mantle of Radiant Glory. 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 78841 (78836 to 78846) were usually added in the same batch as Mantle of Radiant Glory: the same quest line, zone, vendor or reward set.