I only know about very high academic D3 prereads. All wanted school profile and either a resume or comprehensive activity/extracurricular list, in addition to transcript, self-reported scores (advised whether to submit or not) with things like awards and volunteer information, and senior year classes. One school said schedule an interview, and another school said interviews are available but don’t sign up, because it can end up being a negative and doesn’t do much to help if it’s positive. It was very close to everything required for the application, other than recommendations. However, I know these coaches do some “reference” checks, looking into the kid’s character. Usually it’s conversations with other coaches, but calling someone from the high school can happen, too.
A few schools have added writing samples (an academic paper from the prior year). S25 was prepared for that, with material in hand. What he didn’t expect was the school with two writing prompts, which were actually the 2 supplemental essays. That preread was pretty grueling, and a coach said it’s that way on purpose, as a deterrent! They only want kids who want to put in the work and also embrace the academic/intellectual challenge. The good news on that one was twofold - they said if you got through the preread, don’t change a thing in those 2 supplemental essays in your application. Also, the preread was so thorough, the coaches for this team have had a 100% success rate with recruits getting the the early admissions process!
(This was the first choice and this is where my son has committed! In his case, it was definitely worth the effort!)