The following is a reference of the available ItemCollections enum constants and the types of items they group. Note that these lists are ordered (e.g., highest tier to lowest).
AXES("Axe", ...)
PICKAXES("Pickaxe", ...)
HARPOONS("Harpoon", ...)
MACHETE("Machete", ...)
HAMMER("Hammer", ...)
CHISEL("Chisel", ...)
SAW("Saw", ...)
NAILS("Nails", ...)
BOWS("Bows", ...)
CROSSBOWS("Crossbows", ...)
SWORDS("Swords", ...)
THROWING_KNIVES("Throwing Knives", ...)
DARTS("Darts", ...)
THROWING_AXES("Throwing Axes", ...)
METAL_ARROWS(...)
ARROWS(...)
BRUTAL_ARROWS(...)
FIRE_ARROWS(...)
SPECIAL_ARROWS(...)
ARROW_TIPS(...)
AIR_RUNE(...)
AIR_STAFF(...)
FIRE_RUNE(...)
FIRE_STAFF(...)
WATER_RUNE(...)
WATER_STAFF(...)
EARTH_RUNE(...)
EARTH_STAFF(...)
ANTIPOISONS(...)
ANTIVENOMS(...)
ANTIDISEASE(...)
ANTIFIRE(...)
PRAYER_POTIONS(...)
RESTORE_POTIONS(...)
SUPER_RESTORE_POTIONS(...)
SUPER_COMBAT_POTIONS(...)
SARADOMIN_BREWS(...)
RUN_RESTORE_ITEMS(...)
STAMINA_POTIONS(...)
AGILITY_POTIONS(...)
ANTIFIRE_POTIONS(...)
GOOD_EATING_FOOD(...)
FISH_FOOD(...)
GNOME_FOOD(...)
STEWS(...)
PIZZAS(...)
POTATO_FOOD(...)
PIES(...)
GAMES_NECKLACES(...)
RING_OF_DUELINGS(...)
BURNING_AMULETS(...)
NECKLACE_OF_PASSAGES(...)
SKILLS_NECKLACES(...)
RING_OF_WEALTHS(...)
COMBAT_BRACELETS(...)
AMULET_OF_GLORIES(...)
DIGSITE_PENDANTS(...)
SLAYER_RINGS(...)
PHAROAH_SCEPTRE(...)
EXPLORERS_RINGS(...)
LOGS_FOR_FIRE(...)
BONES(...)
GREEGREES(...)
ANTIFIRE_SHIELDS(...)
ANTI_WYVERN_SHIELDS(...)
GHOSTSPEAK(...)
LIGHT_SOURCES("Light_sources", ...)
CATS(...)
HUNTING_CATS(...)
FLOWERS(...)
ROD_OF_IVANDIS(...)
SALVE_AMULET(...)
WATERING_CANS(...)
ENCHANTED_LYRE(...)
SKILLCAPE(...)
SLAYER_HELMETS(...)
RAW_FISH(...)
COMPOST(...)
FAIRY_STAFF(...)
ESSENCE_HIGH(...)
ESSENCE_LOW(...)
COINS(...)
COOKING_GUILD(...)
MINING_HELM(...)