The purple tipped one is Acropora nana I believe, I don't have a common name for it. I didn't get it from Snappy. Funny thing is that when I acquired it the whole piece was a deep rich purple, and it has lightened to its current state. I prefer how it looks now. I have plenty of purple.
The peachy/grey one with the green tips
may be Acropora horrida. Tough to tell until it grows up. It is often called Alien Freckles or Alien Eye Acro. I got my piece from Fragalot, but Snappy carries this one too.
Thanks for the comments Christy! I don't have any super recent FTS. I post my most recent FTS at the top of page one. I think that one is from October...?