Games like Little Ghost
Games like Little Ghost include Hollow Knight, Ori and the Will of the Wisps, Prince of Persia The Lost Crown, Hollow Knight: Silksong, and Haiku, the Robot. We matched them by the tags players give Little Ghost on Steam (Metroidvania, Stylized, 2D Platformer, Atmospheric, and Adventure): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Atmospheric

Ori and the Will of the Wisps
Shared: Metroidvania · Adventure · Atmospheric

Prince of Persia The Lost Crown
Shared: Metroidvania · 2D Platformer · Adventure

Hollow Knight: Silksong
Shared: Metroidvania · Adventure · Exploration

Haiku, the Robot
Shared: Metroidvania · Adventure · Atmospheric

Momodora: Reverie Under The Moonlight
Shared: Metroidvania · 2D Platformer · Side Scroller

F.I.S.T.: Forged In Shadow Torch
Shared: Metroidvania · 2D Platformer · Adventure

ANIMAL WELL
Shared: Metroidvania · Exploration · Atmospheric

Rain World
Shared: Atmospheric · Exploration · 2D Platformer

Gato Roboto
Shared: Metroidvania · Adventure · Retro

The Darkest Tales — Into the Nightmare
Shared: Adventure · Metroidvania · 2D Platformer

Stray
Shared: Atmospheric · Adventure · Cute

Crypt Custodian
Shared: Metroidvania · Adventure · Atmospheric

Pseudoregalia
Shared: Metroidvania · Exploration · Stylized

Axiom Verge
Shared: Metroidvania · Adventure · Platformer

MIO: Memories in Orbit
Shared: Metroidvania · Atmospheric · Exploration

SANABI
Shared: 2D Platformer · Adventure · Action

The Messenger
Shared: Metroidvania · Retro · Platformer

Planet of Lana
Shared: Atmospheric · 2D Platformer · Adventure

Afterimage
Shared: Metroidvania · 2D Platformer · Side Scroller

SHEEPO
Shared: Metroidvania · 2D Platformer · Adventure

Dust: An Elysian Tail
Shared: Metroidvania · Adventure · Platformer

Islets
Shared: Metroidvania · Adventure · Atmospheric

Cairn
Shared: Stylized · Adventure · Atmospheric