Mythical, fairytale, and fantasy creatures

Minecraft is a medieval game with zombies, skeletons, spiders, creepers, endermen, piglins, and witches, but I think the game is missing some mythical, fairytale, and fantasy creatures. There were many creatures like these in medieval tales, legends, and folklore, so I suggest adding more of them to Minecraft to fit the medieval fantasy atmosphere. For example, gnomes, fairies, elves, goblins, mermaids, vampires, mummies (there are husks and skeletons in the desert, as well as Desert Pyramids), ghosts and spirits (there are Allays and Vexes), dragons (there is the Ender Dragon), and phoenixes (there are Phantoms). In parentheses, I mentioned existing mobs that have some similarities to the creatures I am suggesting. However, this does not mean that existing mobs should replace them. For example, Allays and Vexes are not ghosts, so I am suggesting adding a separate ghost mob. These creatures could have their own features, spawn in certain biomes or structures, and have different roles. For example, gnomes could have settlements and trade in the Mushroom Fields, mermaids could be found in the oceans, vampires could appear at night, and ghosts and spirits could appear in the Soul Sand Valley in the Nether. I suggest adding these creatures because they fit well with the medieval and fantasy atmosphere of Minecraft and could add more variety to the existing world.