Which 'monster' types (apart from normal humans and normal animals) would you say are well rooted in legend or myth or are otherwise iconic? They can, but do not have to occur in D&D.
My list so far (feel free to add) of legendary/mythical creature types (I say types, because I am only looking at general creature types and not including unique creatures like a hydra or some other mythical beasts would be):
Dragons
Giants
Ghosts, Spirits & Souls
Vampires
Giant/Oversized Animals
Demons & Devils
Angels
Skeletons
Mummies
Zombies
Feel free to add!
My list so far (feel free to add) of legendary/mythical creature types (I say types, because I am only looking at general creature types and not including unique creatures like a hydra or some other mythical beasts would be):
Dragons
Giants
Ghosts, Spirits & Souls
Vampires
Giant/Oversized Animals
Demons & Devils
Angels
Skeletons
Mummies
Zombies
Feel free to add!