[Request] Mathematics of 6.7 minigame (repeat pieces allowed)

Apparently there's this minigame from Genshin Impact's 6.7 flagship event called Operation Deep-Dive Treasure, which involves hunting for sea creatures and treasures to fill your inventory (full list here). The inventory (at max level) is 8x8 and each item (sea creatures and collectibles) you collect is a puzzle piece with these shapes (see below). I'm only wondering if two players have gotten the same configurations.

Rectangles:

• 1x1: Armored Crabs (both colors), Industrial Gear, Palais Mermonia Seal, Exceptional Romaritime Flower, Singing Beryl Conch, Lumitoile (starfish), Spring of the First Dewdrop, Common Condessence Crystal, and Exquisite Tidalga.
• 1x2: Young Hat Jellyfish (both colors), Angelic Sea Hares (both colors), Bubbly Seahorses (all 3 colors), Dinner Knife, Dinner Spoon, Spina di Rosula Hat, and Aged Strength Potion.
• 1x3: Custom Dinner Plate, Cellared Wine, Piano Keyboard (imitation and normal)
• 1x4: Lost Police Baton
• 2x2: Young Hunter's Ray (both colors), Blubberbeast (Seal) Pup, Sternshield Crab, Diving Helmet, Genuine Singing Conch, Exquisite Candlestick, Celestial Globe.
• 2x3: Hunterknight Gunsmith Twins (stingray boss), Grease-Stained Lyas (sea hare boss), Adult Blubberbeast (seal), Bubbler Seahorse, Cherubic Sea Hare, Underwater Patrol Mek, High-Precision Gear, Windwheel Aster Ornament, Classic Phonograph, Sumeru Vase, Collector's Card Box, Piano Bench (imitation and normal), and Boxing Champion's Punching Target.
• 3x3: The Self-Proclaimed Lord of Scrapland (hermit crab boss), Legris the Faux-Holy Sword (jellyfish boss), and Blubberbearer Recruit (seal boss)

Polyominoes:

• L-triomino: Ball Octopodes (both colors)
• T-tetromino: Fortress Valve
• P-pentomino: Prototype Camera and Classical Instrument
• X-pentomino: Fan Blade Component
• Cross hexomino: Miniature Fountain
• P-heptomino: Mechanical Moon, Underwater Patrol Mek
• Sub-square octomino: Piano Lid, Piano Soundboard, and Piano Chassis (both normal and imitation)