#1 does look like Portulacaria afra; #4 - Crassula ovata. I am surprised it didn't root yet? Are you watering them? Were they rooted plants or cuttings?

They were all rooted at one point, but the crassula ovata were in such bad shape the bottoms of the plants were dry and crispy. They are basically cuttings at this point. They've been laying on dry gritty mix for a month and I don't see anything that looks like roots yet. I have only checked twice, at 2 week intervals because I've read here it's not good to disturb them.

The other 3 barely had roots, but are all showing signs of new growth, so I assume the roots are improving.

This morning I accidentally knocked over the pot #2 was in. The plant fell to the floor and broke off the two largest leaves :( BUT, that gave me a chance to look at the roots and they don't look any better after having been potted in gritty mix for a month. I thought I was seeing signs of new growth in the center, but how can that be if the roots aren't growing? They aren't slimy, or black but they don't look very healthy....