Well out of those 5 options I would exclude Onatel and Rana, they aren´t horrible, but just not as good as the others.
Since you already have an absolute top class healer with Rhys, I don´t think healers are highest priority. Of course Furdinand makes a rather good tank if that´s what you are after… but otherwise…
So my choice would be CRoc. Dispel is great (very rare on a hitter in yellow), Defdown in yellow is also rare. Depends if you can come up with a good team idea. CViv does the same, but she´s slow and a healer…
I am not much into revivers outside of rush, but if that´s a thing for you Dabria is one of very few options, since most revivers are too slow.