Depth rather than breadth should be the goal here. While this seems like a way to set yourself apart from the pack, it can also backfire because though you may make your readers laugh, they often come from such essays not knowing much more about you than when they started. Few universities are looking to enroll a class of comedians. Colleges understand that high school students are works in progress. Young writers needn't be afraid of portraying themselves as occasionally confused and somewhat inexperienced.
Reviewers appreciate youthful optimism.
Reading through these models may give a teenager a better idea of what is possible, but they can also discourage him. You know something, I think I can do better than that.