Here is a close up of the rosettes if that helps. I think it might be an Echeveria? Perhaps E. derenbergii or E. elegans? Can anyone confirm?

I think it may be a Graptoveria? I at least want to know the genus. Please help!

Thank you so much for your thorough response! It made me feel better about the fate of my Lil' Sebastian (yes, I named him lol) :)

I just have a few more questions I'm having trouble finding the answers to.

First, how will I know when roots have formed on the rosettes without disturbing them by moving the soil?

Also, I moved it to an East-facing window in San Diego (if that helps), where I have a Sedum clavatum growing quite well. Do these species need similar light levels?

And lastly, if it continues to etiolate, what is a grow light? Is it a specific kind of light for plants or a normal light I would already have in my house?

You will know when roots form all of a sudden the plant will perk. Tbh with your cuttings, and where you live, the cuttings should root in less than a month.

Another thing I do is take an empty container and put the cuttings inside. Kinda like how you would put flowers in a vase. Just without the water. So you can check without disturbing the roots. Really the main reason I do this is I don't like to lie my cuttings down on my wooden bench in my garage because over time they get misshapen. Sometimes I stick the callused cuttings in my succulent mix, or do what I just wrote above. It's up to you. They will get roots without soil.

Sedums are high light type of plants. If your S. clavatum is growing nice and compact, that should be plenty light for your Echeveria/Graptoveria:).

You shouldn't need a grow light living in SD. I don't use them so I can't comment. All my succulents are outside. I believe they are specific growing lights, not just a regular lightbulb. You don't have a spot you could put them outside?

Here's a pic of an Echeveria I turned into a cutting. It was starting to get a gooseneck. I'm just trying to show you what I meant by putting the cuttings in like you would put flowers in a vase:). There is nothing in the container just air and the cutting:). Depending on what size containers you use you could probably fit three rosettes in a three inch container. I think i answered all your questions. If not ask again:). Goodluck:).

Pic of cuttings and leaves grown without soil. Just sittin in my garage on a wooden bench;).

I do the same as Kara with many of my beheadings -- set in empty container so I can easily see when roots start. I pick a pot, glass, or such that's tall and narrrow enough that the end of the cutting doesn't touch the bottom.