I might be jumping the gun because I haven't seen some of the "popular" Cocotamas but so far, I feel like Saline is my favorite, she is a fun character with a fun gimmick and her relationship with Paline is pretty heartwarming.
I tested this Lora using Hassaku (I always use Pony diffusion 6 for training but most of the time I test on Hassaku) and that seems to generate the best results. A problem I noticed on this lora are the "cocotama pants", the AI is very likely to generate some straps and turn it into an overall. I can only hope this is because Saline's body is white and this messes with the ai.