Read from the World of Warcraft client build files.
How Everbright Helm Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Everbright Helm suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Transmog Sets
Everbright Helm is part of the transmog set Gatecrasher's Battleplate (Warrior, Paladin and Death Knight only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Everbright Helm Fits
Other Items Named Everbright Helm
2 other items in the current build are also called Everbright Helm. 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 101911 (101906 to 101916) were usually added in the same batch as Everbright Helm: the same quest line, zone, vendor or reward set.