Yes, I have seen that. The best we can do is try to match them up to an official name.
I could be wrong, but I think your:
Orostachys eburnifolia is the same as aggregata
Orostachys furusei is the same as iwarenge
Orostachys malacophylla is the correct spelling for your macrophylla
Your Orostachys fimbriata looks to be correct.
For now.
