I think in general most of the reef safe wrasses are pretty peaceful, like the fairy wrasses, canary wrasse, melanarus wrasse, leopard wrasse. There are exceptions though, like the reef safe 6 line wrasse can be pretty aggressive. Most if not all of the non-reef safe wrasse are the ones to watch out for, they are quite territorial and aggressive. Lunare, Banana, Pink Face/five stripe, sunset, Red Coris, etc.
I can only speak from personal experience here as I have a Solar Fairy wrasse, Leopard Wrasse, Canary Wrasse and Melanarus wrasse that all get along and show no signs of aggression towards any fish.
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