#succulent identification

Random shot in the dark, but I’ve been trying to identify this succulent I bought, and I haven’t been having much luck. I spent a bunch of time looking at visual guides but haven’t found a good answer yet. If anyone comes across this and happens to have any insight on what it is, I’d love to hear your opinion. 

My friend got me a succulent for my 20th birthday! I don’t know its species, but I’d like to!

Red and blue desert gem cactus in the back and on the right, a Mexican Hat Plant (Kalanchoe daigremontiana) on the left, and a mystery rosette in the middle. Can anyone identify her please?

To all my plant people, can someone identify this succulent? 

This is my newest little baby! Got it from a local nursery and it was unmarked and I couldn't find a reference photo anywhere of what kind of succulent it is. Any help would be amazing! Thank you

Anyone happen to know what kind of plant this lil dude is? I found it on the floor of a store but didn't see anything similar nearby. Some kind of succulent or cactus but anyone know specifics?

Does anybody know the names of these plants? I would like to get all my plants labeled, so any help would be greatly appreciated!