Leucoxanthus and chrysus are very peaceful. I also recommend babi.what is the most peaceful Halichoeres?
The melanurus? I never hear much about these guys going postal... only them wiping out your CUC, but thats about it.
I know Timors can be real punks, i think Tamav had issues with her's and had to rehome it.
The Yellow Coris? Even tho its not a Coris? Why is it even called coris if its not a coris?
I also recommend vivien as a well behaved wrasse.