Games like Sort Them Cats
Games like Sort Them Cats include Librarian: Tidy Up the Arcane Library!, Shelve the Potions!, Placid Plastic Duck Simulator, Whisper of the House, and A Little to the Left. We matched them by the tags players give Sort Them Cats on Steam (Organizing, Choose Your Own Adventure, Exploration, Relaxing, and Hobby Sim): closest matches first, and among equally close ones the better-known games.

Librarian: Tidy Up the Arcane Library!
Shared: Organizing · Relaxing · Collectathon

Shelve the Potions!
Shared: Organizing · Relaxing · Collectathon

Placid Plastic Duck Simulator
Shared: Relaxing · Collectathon · Physics

Whisper of the House
Shared: Organizing · Relaxing · Hidden Object

A Little to the Left
Shared: Organizing · Relaxing · Cute

DinoBones: Tidy Up the Museum
Shared: Organizing · Relaxing · Collectathon

Travellin Cats in Paris
Shared: Cats · Hidden Object · Relaxing

Unpacking
Shared: Relaxing · Organizing · Cute

Cellar Keeper
Shared: Organizing · Relaxing · Collectathon

Little Kitty, Big City
Shared: Exploration · Cats · Cute

Too Many Toys!
Shared: Organizing · Relaxing · Collectathon

Supermarket Chaos
Shared: Organizing · Relaxing · Collectathon

Slime Rancher
Shared: Exploration · Cute · First-Person

Slime Rancher 2
Shared: Relaxing · Cute · First-Person

Leaf it Alone
Shared: Relaxing · Simulation · Casual

Sizeable
Shared: Relaxing · Exploration · Hidden Object

100 Christmas Cats
Shared: Cats · Hidden Object · Relaxing

Tiny Bookshop
Shared: Relaxing · Collectathon · Shop Keeper

Shelves and Sorcery: Tidy Up the Enchanted Shop
Shared: Organizing · Relaxing · Collectathon

A Short Hike
Shared: Exploration · Relaxing · Indie

Sort Them Ducks
Shared: Organizing · Collectathon · Hidden Object

Teddy's Haven
Shared: Relaxing · Exploration · Shop Keeper

Mon Bazou
Shared: Exploration · Choose Your Own Adventure · Physics

Cat Mail Co.
Shared: Relaxing · Cats · Simulation