1) Character/Class Tiers: F -> E -> D -> C -> B -> A -> S -> SS -> SSS -> EX -> X -> XX -> XXX -> Z -> ZZ -> ZZZ.
Each tier has subgrades as well (e.g., C-, C, C+).
2) Items Tiers: Common -> Uncommon -> Rare -> Epic -> Legendary -> Mythic -> Divine -> Arcane -> Ether -> Eldritch
3) Skills and Spell Tiers: Same as character, except it stops at SSS for awakening. Another complete section for how strong the user makes the power, which can go up till ZZZ.
4) Creature/Beast Tiers: Same as characters, all the way to ZZZ
5) Dungeon/World Threat Tiers: Same as character, all the way to ZZZ