I haven't seen anything that says hes white and considers himself white. He said in the interview he was Armenian and his last name is Lopez regardless, so in your job application scenario any potential employer would believe him to be Hispanic based on the only required information given.
People base things primarily on appearance, in professional situations or otherwise. If you are unaware of this, I'd advise you to get familiar with this mentality because it tends to define most first interactions people have with you.
Rollins LOOKS white, has dominant white genetics, is from a small town of primarily white people in Ohio and makes no upfront indications that he considers himself to be anything other than white, I'd bet my check he considers himself white. Just because YOU have never read anything stating differently doesn't mean it does not exist. Nothing is wrong with this but when you actively choose to pick a side, you subconsciously start identifying yourself with and following the culture of the side you choose. Its why Political mentalities run so deep.
As far as this goes with the Rock, I find it amazing that so many wrestlers are taking the few moments off camera where they can give their true thoughts to speak negatively on him and his actions. There are literally 5 times as many white people (HHH, Taker, Brock, Jericho, RVD, etc.) doing the EXACT same thing as Rock that receive little to no criticism for doing the same thing, its a double standard and people act its a passable offense. At the absolute best its petty and immature and at the worst its speaks volumes about an engrained culture and mentality the WWE has.
Out of all of these haters CM Punk was probably the smartest because he actually had to apologize to the Rock, admitted he was wrong and then was able to turn it into an angle with him. It serves no purpose for guys like Ziggler or Rollins to make comments like this without working towards getting an angle with Rock. Frankly, I don't blame the Rock for having his own dressing room, he doesn't want to be surrounded with whining chumps like this when he has work to do.