Games like Dogfight Darlings
Games like Dogfight Darlings include Rubinite, Vampire Survivors, Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil, BALL x PIT, and Enter the Gungeon. We matched them by the tags players give Dogfight Darlings on Steam (Bullet Hell, Boss Rush, Pixel Graphics, Female Protagonist, and Shoot 'Em Up): closest matches first, and among equally close ones the better-known games.

Rubinite
Shared: Boss Rush · Pixel Graphics · Female Protagonist

Vampire Survivors
Shared: Bullet Hell · Pixel Graphics · 2D

Touhou Koumakyou: New Classic - the Embodiment of Scarlet Devil
Shared: Bullet Hell · Female Protagonist · Shoot 'Em Up

BALL x PIT
Shared: Bullet Hell · Action · Shoot 'Em Up

Enter the Gungeon
Shared: Bullet Hell · Pixel Graphics · Difficult

Touhou Tenkuushou ~ Hidden Star in Four Seasons.
Shared: Bullet Hell · Female Protagonist · Shoot 'Em Up

LUFTRAUSERS
Shared: Bullet Hell · Pixel Graphics · Action

Bit Blaster XL
Shared: Bullet Hell · Shoot 'Em Up · Difficult

The Void Rains Upon Her Heart
Shared: Bullet Hell · Boss Rush · Shoot 'Em Up

Celeste
Shared: Pixel Graphics · Difficult · Female Protagonist

Furi
Shared: Bullet Hell · Boss Rush · Shoot 'Em Up

Last Command
Shared: Bullet Hell · Female Protagonist · Cute

ZeroRanger
Shared: Bullet Hell · Shoot 'Em Up · Pixel Graphics

Rabi-Ribi
Shared: Bullet Hell · Female Protagonist · Pixel Graphics

Jet Lancer
Shared: Pixel Graphics · Action · Bullet Hell

Assault Android Cactus+
Shared: Bullet Hell · Shoot 'Em Up · Female Protagonist

BLUE REVOLVER
Shared: Bullet Hell · Shoot 'Em Up · Pixel Graphics

Titan Souls
Shared: Pixel Graphics · Boss Rush · Difficult

Touhou Fuujinroku ~ Mountain of Faith.
Shared: Bullet Hell · Action · Shoot 'Em Up

Bot Vice
Shared: Bullet Hell · Pixel Graphics · Shoot 'Em Up

Star of Providence
Shared: Bullet Hell · Shoot 'Em Up · Pixel Graphics

Planes, Bullets and Vodka
Shared: Bullet Hell · Shoot 'Em Up · Action

UBERMOSH
Shared: Pixel Graphics · Action · Female Protagonist

Touhou Kouryudou ~ Unconnected Marketeers.
Shared: Bullet Hell · Shoot 'Em Up · Action