Thing is, we know Necrofriggians come from at least two planets. We don't know if Thep Khufans and such come from other worlds. Therefore, it's unreasonable to assume that they do. Innocent until proven guilty. Or, in this case, wrong until proven right.
We also don't know that Kuphulu/Crujo do come from Anur Khufos/Luna Lobo, but they, and many others of their kind, are shown living on Anur Transyl (Kuphulu's home was shown), so they shouldn't be listed as living somewhere we don't know they come from.