Dan Freedman’s work makes it clear that there are hard-wired differences in personality between different human populations. On average, but quite noticeable. Not just between groups that are separated by long distances or ancient population splits: there are noticeable differences between Cantonese and Japanese, or between Chinese and Navaho. Not all such differences will show up in the first day of life, but it is easy to see that first-day behaviors are innate. Later behaviors may or may not be.
The standard belief in the academy is that there are no such personality differences between ethnic groups and races. It’s not that they have some kind of argument based on genetics and selection and prehistory that makes such differences super-unlikely: no, it can’t be true because it would hurt their feelings.
You know, the people populating the social sciences are bound to be right about something, eventually.