http://www.stage-directions.com/1902-navigating-top-theatre-programs-auditions.html
The article is a few years old, but I think it’s all still relevant.
If anything, I think it shows that, even among these well-regarded professionals from the programs many people are vying to secure spots at, there is no uniform consensus on what’s the best way to approach your audition. What I took away from it is that you can’t develop a formula to please every rep from every school - so focus on being genuine and enthusiastic instead.