Yes, it is an Aeonium. I don't know if it's that easy to pin down more than that. The way you know it's not an Echeveria is by the marginal hairs, and the central tannic stripe. Most Aeoniums have those marginal hairs; the few hairy Echeverias tend to have hairs on the upper and lower surfaces as well. Almost all Aeoniums enjoy exactly the same care, so a precise ID is not important for care.
Your purple plant is likely "Zwartkop" if it looks like the plant in the photo.
The intermediate reddish ones are harder for me to pin down. That plant will need a bigger pot (either now or in the fall, not in the summer) and it will probably do better in a regular plastic (or glazed ceramic) pot. Aeoniums will tolerate unglazed clay pots but they tend not to thrive in them.
You will note a seasonal decline with both of your Aeoniums during summer, their season of rest. It's important not to overwater during this period. More on the genus here:
The Aeoniums Database
