Hello! I was the one who organised the chests and made the keyblades and wigs! I am going to tell you the correct Rarities!
ULTRA RARE: OathKeeper+Oblivion, Ultima Weapon, and Beanie
VERY RARE: Riku kh3 flip hat, Kingdom Key D, Master Keeper, and Keyblade of Hearts
RARE: Way To The Dawn, Xion Wig, Axel Wig, Xemnas Wig, Kingdom Hearts Shirt, and Destiny's Embrace
UNCOMMON: Marluxia Wig, Starseeker, and Sora Party Glasses
COMMON: Mysterious Abyss, Metal Chocobo, LionHeart, KH Crop Top, and kingdom key
VERY COMMON: Stick and Wooden Sword