If you want to find specific examples, try looking up the official accepted/waitlisted/rejected threads for ED/EA/RD for the schools you’re interested in here on CC. I know the ones for Stanford have helped me to remember that it doesn’t matter what other people have always done, because everyone’s circumstances are different.
Here’s an example of what I’m talking about for Harvard SCEA results for the class of 2019: http://talk.collegeconfidential.com/harvard-university/1714730-official-harvard-university-2019-scea-decisions-only.html