There are differences in people-group cultures - trivial examples being music genres, manner of speaking, how loud parties get, etc. Substantive group culture differences might include how much education is valued. All this being on average, taken as a group.

But group cultural distinctives/values are very different from corporate culture. Corporate culture goes to how decisions are made, forgiveness vs. permission, what behavior is rewarded, etc. I don't think you can get that from a job interview. I don't believe you can interview for "corporate culture fit" and I don't think it correlates to people-group.