https://www.gardenweb.com/discussions/4071238/aeonium-leaf-propagation#n=35

According to this discussion, particularly towards the end, many people have successfully propagated aeoniums from leaves. So your plant, which l;ooks like an aeonium, probably is.

It IS an Aeonium, tho' I don't know which. I've grown a 3 or 4 kinds (not well, indoors only). Never heard of them being propagatable (?) by leaf. Had to be division like a separate rosette.

OK, I read the thread & Neil's experiences, but to date, he seems the only one who has succeeded w/ it. I was going to suggest it might be something like what happens w/ a particular Hoya. Folks think it'll root & it does, sometimes a handful of roots, but it never grows into another plant, 9/10 times it fails.

Perhaps Cactus McHarris can speak to this since he'd grown various Aeoniums outdoors in San Diego. Whether or not one can propagate Aeoniums from leaves pls. I'm guessing he'll say not likely.

Don't know where you are or what heat you get, but these can go dormant in Summer, closing their rosettes somewhat

Update: The plant is doing well! I’ve narrowed it down to some kind of Aeonium Arborium. I was thinking Kiwi, but the leaves seem too dark for that.

Anyways, here are some new pics!

Joey,

It's doing its wintertime growth thing well. You don't have Aeonium arboreum - I would WAG it as Aeonium haworthii.

Yes. A. haworthii