Please Help! Identfication and care.

[bulatbilar]

I'm needing help identifying these succulents that I purchased from Lowes about 2 months ago. This one was just labeled "mimicry plant", and it was a lot more compact when I first got it. I think it's becoming more stretched out.

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This is one that I bought from CVS. It was unlabeled. It's really stretched out, I think.

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This baby one sprouted from one of the fallen leaves. I think it's also stretched out.

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I also have a Corpuscularia lehmannii and a Sedum clavatum that have stretched out since I purchased them as well. I'm concerned. This Chicago summer has been unusually dark and rainy this year. We have barely gotten any sunlight this summer. Is there an artificial light I can purchase to help them out?

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[CoronaCactus]

First one looks like Gibbaeum dispar. No idea on the others.