In most situations they will be fine, clowns will not mess with tangs and angels. Maybe some of the more aggressive types such as maroons or tomato clowns that might, but it would be rare.
yep, my maroon went after everyone who came near his anemone even chasing them around the tank. I have 3 Dwarfs Angels & 3 Tangs.
Angels= Lemonpeel, Flame & Coral Beauty(Smallest of the 3)
Tangs=Regal,Chevron & Clown(Smallest of the 3)
Clowns in general take no guff! Non aggressive types won’t be bullied and tend to be peacekeepers. Seriously! They tend to not like the fuss! Aggressive types....can be anybody’s guess.
General rule of thumb is most aggressive fish last to be added. Of course this is fm anecdotal observations.