One of which i am positive is kalanchoe, but unsure of species. I'm not familiar enough with them for a confident answer, but a did think pumila? The new tiny leaves are really white, and some of the larger leaves have a small white rim.

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I never knew what this was. My guess was an echeveria of some sort....but i ran across some hens and chicks on the web that strongly reminded me of this......When I first purchased the plant it was not very tall, the rosette was a bit sunken in, a few months later it is growing outwards and i'm wondering if it is because it's happy or it's a sempervivum calcareum getting ready to bloom?

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