Read from the World of Warcraft client build files.
How Grim Inquisitor's Cloak Compares
Who It Suits
Grim Inquisitor's Cloak carries Agility or Strength or Intellect, the primary stat of Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Beast Mastery, Marksmanship and Survival Hunter; Assassination, Outlaw and Subtlety Rogue; Discipline, Holy and Shadow Priest; Blood, Frost and Unholy Death Knight; Elemental, Enhancement and Restoration Shaman; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter; Devastation, Preservation and Augmentation Evoker.
Similar Items
The 10 items nearest to Grim Inquisitor's Cloak (item level 13) in item level among Armor > Cloth, Back slot, from item level 14 to 20.
Nearest lower item levels below Grim Inquisitor's Cloak among Armor > Cloth, Back slot: Cloak of the Darkmoon Faire (item level 1) and Tyrhold Drape (item level 1).
Transmog Sets
Grim Inquisitor's Cloak is part of the transmog set Grim Inquisitor's Regalia (Warlock only), which the Appearances collection lists in 4 versions. The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Grim Inquisitor's Cloak Fits
Other Items Named Grim Inquisitor's Cloak
1 other item in the current build is also called Grim Inquisitor's Cloak. 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 247206 (247201 to 247211) were usually added in the same batch as Grim Inquisitor's Cloak: the same quest line, zone, vendor or reward set.