The safest choice for getting along peaceully is the clown, shrimp goby, blenny, wrasse. Each fish has a different niche.
Niches:
Clown - whatever it chooses to host it, or water column
Goby - hovering near it's burrow on the tank bottom, Blenny - perching on the rocks and hidey holes
wrasse constant grazer looking for tiny inverts, will need a hidey to sleep in
Skunk cleaner - gets along with everybody
Pseudochromis, a potential problem - loves hidey holes similar to blenny , eating habit similar to wrasse, a threat to the the goby's shrimp
I'm not sure which fish you are refering to as a "bicolor" -- if you mean bicolor blenny - they're will none of that! lol

It will not go exist with your tail spot. I imagine you already know that - so I'm confused.
Has anyone addressed bioload?
One more bit of info on the clowns - percs sometimes have an annoying habit of hanging around up at the top of the water when they don't have an anemone. Oscellaris are supposed to be less likely to do this. (Personanly I prefer them with an anemone....) Percs may stay slightly smaller than oscellaris, fwiw. And someone mentioned maroons...that's not an option for your tank
