Three different plants

One is a single stalk that is dark green with red on the leaves. The little one is a very pale blue color with teardrop shaped leaves. The last one is a frosty green color with long bulbous leaves.

These are all commonly sold by growers to grocery stores and box stores, most of the time with little in the way of labeling other than 'succulent'.

I've labeled the one that I'm pretty sure of - Sedum spathufolium, which is actually hardy, and will grow outside in many areas, depending on where you are. You can see more here: Sedum spathufolium 'Capo Blanco'

The blue colored one I think is some kind of Cotyledon, which is a huge genus, but this one shows some of the characteristics of some species.

The tall purple one is a mystery. I'm not sure what that would be - at a wild guess, just based on the way the leaves are spaced would be Pachyphytum.

Hope that gives you a place to start looking anyway.

Happy Succulent Gardening!
Jacki