In my world, there are sixteen human species (mammalian species from the Homo genus):
- Common humans (no explanation is necessary);
- Marine humans/Merfolk (they have a seal-like blubber, they have a pangolin-like skin, they have webbed digits, they are as massive as belugas, they are obligate omnivores like brown rats, they are as solitary as blue whales, females are larger than males with a basking shark sexual dimorphism, they have indeterminate growth, they tend to be blood type AB, and they are negligibly senescent like Greenland sharks) (the place on Earth that can be called their cradle is New York Harbor, United States of America);
- Winged humans/Angels (they have hands that look like bat-like wings, they are omnivores with herbivorous tendencies like gorillas, they are as large as wandering albatrosses, they are as social as cheetahs, females are larger than males with a tarantula-like sexual dimorphism, they are venomous, they tend to be blood type A, and they are negligibly senescent like giant tortoises);
- Horned humans/Demons (they have goat-like horns, they are omnivores with carnivorous tendencies like raccoons, they are venomous, they are as eusocial as termites, weighting a metric tonne, the queen is always the largest individual in a given colony, and at the opposite, workers are the smallest, they only weigh a kilogram, most are intersexes, except naturally the queen, the king, the princes, and the princesses, they tend to be blood type B, and they are negligibly senescent like naked mole-rats);
- Magic humans/Wizards (males, females, and intersexes all have facial hair, they are obligate omnivores, they have epicanthic folds, females are larger than males with a housefly-sexual dimorphism, and they tend to be blood type AB) (the place of Earth that can be called their cradle is Cameroon);
- Arboreal humans/Elves (they cannot grow facial hair, they are omnivores with herbivorous tendencies, males are larger than females with an Asian elephant-like sexual dimorphism, they have pointy ears and epicanthic folds, they tend to be blood type A, and they are negligibly senescent) (the place on Earth that can be called their cradle is the United Kingdom, Scotland to be exact);
- Trolls (they are obligate omnivores, they are as social as goldfish, they are as large as the heaviest dog breed, they have pointy ears and epicanthic folds, males are larger than females with a lion-like sexual dimorphism, and they tend to be blood type B) (the place on Earth that can be called their cradle is Scandinavia, Mainland Denmark to be exact);
- Gnomes (they are as small as domestic cats, they are omnivores with herbivorous tendencies, they have pointy ears and epicanthic folds, males are larger than females with a pigeon-like sexual dimorphism, and they tend to be blood type O) (the place on Earth that can be called their cradle is Jersey, United Kingdom);
- Ogres (they have a seal-like blubber, they are as tall as the average real life NBA player, and as heavy as adult male gorillas, they are obligate omnivores, they have epicanthic folds, they are as solitary as orangutans, and females are larger than males with a great white shark-like sexual dimorphism, they have indeterminate growth, they tend to be blood type B, and the place on Earth that can be called their cradle is French Antilles, Fifth French Republic);
- Giants (they have a seal-like blubber, they are as massive as polar bears, they are omnivores with herbivorous tendencies, they are as solitary as orangutans, and females are larger than males with an American bullfrog-like sexual dimorphism, they have indeterminate growth, they tend to be blood type A, and the place on Earth that can be called their cradle is Northern Quebec, Canada);
- Halflings (they are obligate omnivores, they are as large as the largest domestic rabbit breed, they are as social as pygmy chimpanzees/bonobos, they have pointy ears and epicanthic folds, they tend to be blood type AB, males are larger than females with a pheasant-like sexual dimorphism) (the place on Earth that can be called their cradle is England, United Kingdom of Great Britain and Northern Ireland);
- Dwarfs (they are omnivores with carnivorous tendencies, they are as social as house mice, they have epicanthic folds, they tend to be blood type B, and males are larger than females with a dog-like dimorphism) (the place on Earth that can be called their cradle is Zürich, Switzerland);
- Hematophagous humans/Vampires (they are as small as common chimpanzees, they are omnivores with carnivorous tendencies, females are larger than males with a peregrine falcon-like dimorphism, they have pointy ears, they are venomous hematophagous parasites, they tend to be blood type AB, and they are negligibly senescent) (the place on Earth that can be called their cradle is Ukraine);
- Furry humans/Therianthropes (they are as small as orangutans and as heavy as common chimpanzees, they have a gorilla-like fur, they are omnivores with carnivorous tendencies, they are as solitary as bears, they have pointy ears, they tend to be blood type O, they are venomous parasites that steal other mammals' milk, females are larger than males with a spotted hyena-like dimorphism, and they are negligibly senescent) (the place on Earth that can be called their cradle is Russia, Siberia to be exact);
- Goblins (they are omnivores with herbivorous tendencies like squirrels, they have pointy ears, they tend to be blood type A, and males are larger than females with a horse-like dimorphism) (the place on Earth that can be called their cradle is Germany, Westphalia to be exact);
- Orcs (they are as large as American black bears, they are omnivores with carnivorous tendencies like ravens, they have pointy ears and epicanthic folds, they tend to be blood type O, and males are larger than females with a mandrill-like dimorphism) (the place on Earth that can be called their cradle is Mongolia).
Also, all these species can reproduce with each other, and the resulting offspring is sub-fertile (meaning that they can reproduce themselves, but they have a lower fertility than their parent species: females are more likely to have endometriosis, and polycystic ovary syndrome, and males are more likely to get oligospermia, and teratospermia). That said, hybrids between anatomically modern humans and wizards are extremely common (the same can be said to hybrids between ogres and giants, and to hybrids between dwarfs and halflings), but hybrids between vampires and giants are relatively rare (the same thing can be said to hybrids between demons and halflings).
Given these characteristics, what would their common phylogenetic tree look like, and what non-magical factors would drive the evolution of such varying human species?