Stocking suggestions for 90 gallon mixed reef

[Jl330]

Current fish are the following

Ocellaris clown
Blue green chromis
Watchman goby(his shrimp didn’t survive the move)
Melanaurus wrasse
Coral beauty
Bengai Cardinal x2

I have a mix of lps, softies, and will be adding a few easy sps so I don’t want any nippers and want to keep everybody as peaceful as I can moving forward.

Any suggestions for tank mates?

I definitely want a royal gramma because they’re a favorite of mine. Possibly a second clown.

Any other ideas? I like activity in the tank.