Existing Devil Fruits:

Logia:

Sapnap: Flame-Flame

Paramecia:

Karl: Time-Time

Skeppy: Sparkle-Sparkle

Michael: Revive-Revive

Sam: Pop-Pop

Original Devil Fruits:

Logia: 

Charlie: Slime-Slime

Tubbo: Bees-Bees

Paramecia:

Tommy: Noise-Noise

Ranboo: Tele-Tele

Eret: Plant-Plant

George: Shroom-Shroom

Zoan:

Puffy: Sheep-Sheep

Phil: Bird-Bird(Model: Crow)

Quackity: Bird-Bird(Model: Duck)

Techno: Boar-Boar

Fundy: Fox-Fox

Michael’s Chicken(originally a dagger): Bird-Bird(Model: Chicken)

Ant: Cat-Cat(Model: Housecat)

Mythical Zoan:

Foolish: Totem-Totem

Wilbur: Ghost-Ghost

Bad: Demon-Demon

Dead Characters:

Zoan:

Schlatt: Sheep-Sheep(Model: Ram)