It really just depends if the yellow tang you get is a jerk or not.
Some are nice and cool and don't really care about who you put in the tank with them.
Some are jerks and will bully everyone in your tank just because they can.
Other's will just not tolerate another "like bodied" fish. They all have their own personalities, just like people.
The yellow tang I used to have did not tolerate other tangs, nor did he like "like bodied" fish. I sold him because he would no leave my Naso that was twice his size alone.
Currently I have an Atlantic Blue, Naso, Purple, and a Scopas Tang and they all get along fine. The purple and Scopas occasionally harass my CBB.
All in all my clowns run the tank. They just run everyone away from their nest. I'm keeping my fingers crossed that when my Atlantic Blue matures Zues does not turn into to big of a tyrant as the CBB (Beaker) and Zues are my 2 favorite fish in my tank.