So far, we have seen Three Types of DFs that can grant Natural Flying (That doesn't require any Technique such as Shiki, Doffy or Kaido)
They are:
Tori Tori No Mi / Bird Bird No Mi (Such as Pell & Marco)
Ryu Ryu No Mi / Dragon Dragon No Mi / Dinosaur Dinosaur No Mi (Such as King)
Mushi Mushi No Mi / Insect Insect No Mi (Such as Kabu & Bian)
Remaining Two should be:
Bato Bato No Mi / Bat Bat No Mi (Such as Non-Canon Patrick Redfield)
A DF that include Mythological Models which includes some or all of these: Angel, Harpy, Fairy ... etc (Laffitte being possible User)