Overriding the actual tv canon apparently since as pointed out on this thread they were aliens in Enterprise. You think they could have at least changed their name.
I think with the Illyrians you can at least write that off as two different aliens having the same name.
I admit I am coming into this discussion without having read all of the prior 14 pages, but if the point of contention is that Una doesn't look like the Illyrians from Enterprise, we actually see an Enterprise-style, forehead-ridged Illyrian in the "Override, override!" scene where Una looks at a roster of genetic modifications. Seems clear they're the same species.
Forgive me if I'm misinterpreting these posts!