first: chill. This post and your user name suggest you will be too amped up one college on once college decision time comes that if you get rejected you will be devastated.
Second: You’re a little early to ask this question, as each year is different, and at 2 years out it is significantly different in terms of institutional priority.
Third: Harvard is so selective there is no way to deduce a pattern, and at best you can discern already recognized factors (URMs, legacies, etc).
Fourth: There is no formula to admissions. You can get rejected or accepted even if you should have gotten the other result. If there was a formula, someone would have become a millionaire selling that by now
Fifth: There already is a Harvard 2021 class discussion, ask them.
Sixth: Any result from this question is a case study, and so if you see someone did film and they got in this does not mean everyone who gets in does film. Correlation does not equal causation
Seventh (and final): There are already average ACT and GPA numbers out there. Harvard is so selective that no score or EC (unless it is an institutional priority, see number 2) can “help” you get in.