I see a jade, probably senecio (chalk sticks?) - skinny grey leaves; probably Echeveria Black prince next to it...couple of fuzzy leaves sticking out front could be Kalanchoe tomentosa? and something is hiding on very left of jade - can't tell for sure... If it was mine, I would pot them up properly - I believe these are just a temporary 'containers' (they do look nice, but most likely don't provide a proper growing conditions for succulents). Where are they going to be kept - indoors? outside?...

#2 is definately crassula springtime. I have some myself. They will get long and grow small pink ball shaped flowers

The Aloe is likely a hybrid. The Euph. looks to possibly be a monstrose form of some sp.. 6. I think is a Gymnocalycium sp. 7. Looks like an Aeonium in form. Some sedums have this form, but are usually not this large. 8. You may be able to I.D. this Mammillaria at the CactiGuide site. Look for Mamms that bifurcate vs. ones that stay single. It looks like a common one so you should be able to find it. Sorry I don't have any complete I.D.'s but maybe the leads will help.

It maybe, many graptopetalum sp and hybrids look very similar. And very variable, same plant could look quite different if grown in sun or more shady spot. Many succulents do, but ghost plant seems to be more variable - JMO.