Tallest one (in your hand) is Crassula mesembryanthemoides; one next to it may be a hardy succulent/ground cover Sedum reflexum (Blue spruce sedum) - not 100% sure; one on very left below Crassula is Kalanchoe tubiflora (Bryophyllum tubiflorum); very bottom center, I think it may be another hardy groundcover Sedum rupestre 'Angelina' . The large center one and smaller to it's right - I am not sure. Looks like there are 2 more hiding (maybe 1 is an offspring of the big one?), but can't tell what they are from the photo. They all need fast draining potting mix, needs to be potted in container with drainage holes or ground - depends what your climate is (hardy sedums will overwinter in cold zones as low as z4 or even z3). And good sunlight. Kalanchoe tubiflora will self-propagate, every little plantlet you see on the leaves is potential plant - they just fall off and grow...in some places they are considered 'invasive'. When posting multiple plants for ID, it is easier to refer to plants if they are numbered. Could you add the general location and/or zone to your name?

Hi, It's a Haworthia, don't know which specific one. Leave it out to dry a couple of days, then give it a very small pot & fast draining mix like 50/50 Cactus & Succulent soil mixed w Perlite. Will make it fast draining, which is what it needs along w/ medium bright light, not direct sun. Don't water for a couple of days after potting. Don't know about the cat, others will.

I think that this is Faucaria Tigrina, also known as "Tiger's Jaw".

are you growing it as a houseplant.. because it shouldnt look like that .. with the curled leaves.. its hard to even guess ... also.. its hard to set a scale ... ken