I can look at your Astros all day! I think that your last plant is Aloe haworthioides, not Haworthia but you'll know for sure when it flowers. I'm going to put some of my Astros outside this year, depending on how the summer weather is, last summer was too cold and rainy and it was a good thing they were in the greenhouse. The mutations that I have seen on Astros are always cool! Many of them come from damage to the growth points by thrips or fungus, such as this one - you can see the scars

You are the first person I have seen that has bought adenium seeds and had good result with the flowers. Usually people end up disappointed because all of the fancy flowered types are hybrids and the seeds don't often produce something looking like the parent. Your pink one is an Adenium swazicum hybrid