Games like Gallery Organizer
Games like Gallery Organizer include Librarian: Tidy Up the Arcane Library!, Unpacking, DinoBones: Tidy Up the Museum, A Little to the Left, and Supermarket Chaos. We matched them by the tags players give Gallery Organizer on Steam (Organizing, Cozy, Relaxing, Casual, and Collectathon): closest matches first, and among equally close ones the better-known games.

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

Unpacking
Shared: Relaxing · Organizing · Casual

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

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

Supermarket Chaos
Shared: Organizing · Relaxing · Collectathon

Cellar Keeper
Shared: Organizing · Relaxing · Casual

House Flipper
Shared: Simulation · Relaxing · Casual

Whisper of the House
Shared: Organizing · Relaxing · Casual

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

Hozy
Shared: Cozy · Relaxing · Casual

Shelve the Potions!
Shared: Organizing · Relaxing · Casual

PowerWash Simulator
Shared: Casual · Relaxing · Simulation

Creature Kitchen
Shared: Cozy · Puzzle · Relaxing

PC Building Simulator
Shared: Simulation · 3D · Relaxing

Cleaning Up The Puzzle Gallery
Shared: Organizing · Relaxing · Casual

Spirit City: Lofi Sessions
Shared: Cozy · Organizing · Relaxing

Leaf it Alone
Shared: Relaxing · Cozy · Casual

Tidy Up the Flower Shop
Shared: Organizing · Casual · Relaxing

Retro Rewind - Video Store Simulator
Shared: Relaxing · Simulation · Casual

Bunker Tidy Up
Shared: Casual · Simulation · Collectathon

Toy Shop Tidy Up
Shared: Organizing · Relaxing · Collectathon

Slime Rancher 2
Shared: Relaxing · Singleplayer · Casual

Sort Them Ducks
Shared: Organizing · Casual · Simulation

Tiny Bookshop
Shared: Cozy · Relaxing · Casual