Justonemom - my kids also went to a private school where it was predominantly white, they constantly send 35%+ of their students to top 20s. I used to be very impressed until I figured out a lot of it were legacies and athletic recruits. The school required 100+ hours of volunteer work, but they didn’t arrange the volunteer work. I would say most students did a lot more hours than the minimum, and those kids also had very demanding ECs. I wouldn’t be surprised if it’s the case at your son’s school. If I were you I would carefully go over the common app. For every EC listed, they ask if you will continue such EC in college.
D1 was more like your son that she felt she didn’t have much time to do volunteer work with her 20+ hours of one EC. D2 was a different kid. she often picked the volunteer work most kids didn’t want to do. One of those volunteer work was making sandwiches and passing out food to homeless people in NYC under bridges and isolated places when it was freezing cold out. D1 is at a very lucrative job now, but I see D2 getting her law degree and maybe changing the world a bit.