The war of the Star Gods should try to avoid involving the human race, while actively promoting human development. As for how to allocate the humans, it depends on each Star God's territory.
Because the humans on the heart-core planet have been deeply influenced by the power of the Star Gods, at birth, their physique tends to incline towards a particular Star God. Of course, this is just a tendency.
Even if influenced by the power of other Star Gods, new tendencies can still be formed. After all, the current human race has survived the wars of the Star Gods, and their adaptability is very strong.
So dividing them according to territory is quite appropriate. As for instances of individuals leaving a Star God's territory, the Star Gods do not stop it; in fact, they somewhat support it.