Can anyone ID the 2 plants on the left?

From left to right:

1. unknown, maybe Echinocereus subinermis?

2. unknown

3. Crassula ovata

4. Echeveria 'Tippy'

I started with the jade plant just a couple months ago and it came along nicely (already transplanted some of it) so I decided it was safe to buy more :)

{{gwi:599669}}