Plant #4 appears to be some type of Tillandsia; plant #5 is Peperomia ferreyrae; plant #6 is some type of Plectranthus. Plant #1 I'd need a close-up of the leaves to id. Plant #2 looks like a Sanseveria cylindrica, plant #3 could be a Sedum or perhaps a Kalanchoe; a close-up of the leaves or even better, a picture of the flowers would nail an id for you.

I agree with Rina that conditions can alter the appearance of the plant. This picture shows when I first purchased the E. agavoides and a year later after being in full sun. They're in the same pots. And size, too! The plants in the ground get shaded by a palm tree in the afternoon. The plant in the pot get full sun all day. All plants are the same age. And that's a bigger pot than above.

Any rot (roots or stems) should be removed, it could spread/continue thru the plant. Almost all succulents have very similar basic requirements: free draining potting mix, container with drainage holes, and good light exposure. Most will do best in full sun, but should be acclimatized to it. And good air circulation, even more important in humid climates. Many succulents have a powdery coating on the leaves (often referred to as farina) that should not be rubbed off. Try not to touch leaves excessively, some will always rub off and it is not dangerous to plants (much more important to remain on the leaves in the wild), just that they look better.

Yup that looks like it. Thank for the help