Meta-ethnicity

Meta-ethnicity is a relatively recent term (or neologism) occasionally used in academic literature or public discourse on ethnic studies. It describes a level of commonality that is wider ("meta-") and more general (i.e., might differ on specifics) than ethnicity, but does not necessarily correspond to (and may actually transcend) nation or nationality. In colloquial discourse, it usually signifies a larger group of related ethnic groups who identify with each other.
An early use—possibly the first published in English—was an article in a 1984 USSR Academy of Sciences publication discussing identity in Asia and Africa.
Examples of use.
Some other examples: