I have a dd like this. She had some long term ECs like sports that she did all four years of high school (not at a recruitable level, just that she enjoyed playing) but also got involved with other things like mock trial, doing lighting for the school play, peer ministry. She just enjoyed exploring many different things. She felt that schools with an open curriculum would be a great fit for her to continue exploring different interests, so she applied to several of those and is attending one. I do think that that diversity in interests helped her at the schools to which she applied.