I have a tomini tang, a Carpenter's wrasse, leopard wrasse (can be finicky), Lubbock's wrasse, and royal gramma in my 75 right now. As far as tangs in that size tank, the tomini and kole (one or the other - not both) are the only ones commonly available I'd go with. I'm very partial to flasher and fairy wrasses. They don't bother corals or inverts and are colorful and active. Some wrasses will go after each other until a hierarchy is established, so I would recommend an acclimation box if you keep more than one species.
Other fish I would consider include a Midas blenny or melanarus wrasse. (My melanarus wrasse was a bit aggressive for the rest of the tank and had to be moved. Most folks report their doesn't have quite the aggressive tendencies.)
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