Okay, yeah you seem to only have sand sleeping wrasses. The genera I know that do this are:Some of mine bury in the sand and then come out. There is no bullying i see, but i guess it could be happening when i am not watching. Generally, my tank just has lots caves and flow is high. They hunt in the rocks.
Halichoeres
Macropharyngodon
Anampses
There are more but they’re slightly harder to obtain in the hobby.