Eh... Ok

Level 0: The Lobby
Level 1: Habitable Zone
Level 2: Pipe Dreams
Level 3: Electrical Station
Level 4: Abandoned Office
Level 5: The Hotel
Level 6: Lights Out
Level 7: Thalassophobia
Level 8: Cave System
Level 9: Darkened Suburbs
Level 10: The Field of Wheat
Level 11: The Endless City
Level 12: Matrix
Level 13: The Infinite Apartments
Level 14: Military Hospital
Level 15: Futuristic Halls
Level 16: Altered Topography
Level 17: The Carrier
Level 18: Memories
Level 19: The Attic
Level 20: Warehouse
Level 21: Numbered Doors
Level 22: Abandoned Parking Lot
Level 23: The Petrified Garden
Level 24: The Moon
Level 25: Anomaly
Level 26: Deeper Cave Systems
Level 27: The Woodrooms
Level 28: Sun Rise and Set
Level 29: Artistic View
Level 30: Waves Don't Die
Level 31: Oversaturation
Level 32: Entertainland
Level 33: The Infinite Mall
Level 34: Sewer System
Level 35: An Empty Carpark aka The Skin-Stealers Base
Level 36: The Airport
Level 36.5: The Plane
Level 37: Welcome to the Jungle
Level 38: Fold Point
Level 39: Enchanted Forest
Level 40: Unnamed
Level 41: The Artist
Level 42: Unnamed
Level 43: Unnamed
Level 44: Alternis
Level 45: Orange Store
Level 46: Unnamed
Level 47: Unnamed
Level 48: The Sunset Beach
Level 49: Relentless Racetrack
Level 50: The Moribound Highway
Level 51: Unnamed
Level 52: Haunting Nightmares
Level 53: Alone
Level 54: Stairwell of Spirals
Level 55: Land of Ice
Level 56: God's Cage
Level 57: Art Gallery
Level 58: Unnamed
Level 59: The Backway
Level 60: Imprisonment
Level 61: The Train
Level 62: Jungle Backyard
Level 63: The Opera
Level 64: The Flats
Level 65: Bloodstained Garden
Level 66: Swampy Waters
Level 67: Waterways
Level 68: The Eater
Level 69: Hilbert's Motel
Level 70: Deposit
Level 71: WoodsVille
Level 72: The Railway
Level 73: Unnamed
Level 74: Stage Fright
Level 75: Gallium Caves
Level 76: Claustrophobia
Level 77: The Underground Train
Level 78: Space Station
Level 79: Elevator Chaos
Level 80: Barbed Fenced Playground
Level 81: Empty Pizzeria
Level 82: Saneless Mansion
Level 83: Field of Roses
Level 84: Unnamed
Level 85: The Acrylic Garden
Level 86: Deep Black
Level 87: Unnamed
Level 88: Atlantis' Aquarius Dining
Level 89: Daycare Dreams
Level 90: Newly Renovated Home
Level 91: Unnamed
Level 92: Unnamed
Level 93: The Summit
Level 94: Penitentiary Halls
Level 95: Unnamed
Level 96: Unnamed
Level 97: Overlooking the Abyss
Level 98: Downtown Diner
Level 99: Distant Light
Level 100: Beach

I said liminal spaces like small rooms

Answer: level 0 , kitty's house, downtown diner, empty pizzeria, claustrophobia, the train, imprisonment and deeper cave systems.

Damn- I really wasted like... 3 hours-

It was worth it tho

Yes it was :) you listed unofficial levels tho ( only some unofficial ) but that's ok tho! :)

the end