To be fair, indigenous in this sort of context usually refers to a colonial state where the ruling group is different from the one there before a colonial empire got there. I don't usually see it used for populations that haven't been subject to conquest and occupation like that within the last millenia or so, even if it could technically fit, it'd be a bit redundant.

Though if the history of, say, Ireland is any indication, historically when white Europeans end up in that kind of position they haven't faired much better.