There is a huge difference between considering 20+ schools and then actually applying to them. Yes, some essays are recyclable, especially those about non-school specific subjects, but if you can recycle a school specific essay, it probably means it is pretty generic.
The better strategy seems to be to apply to EA/ED and/or rolling admissions schools first because if you get in to at least 1 of those, you can eliminate any schools that are further down the list. You will save at least the application and official test score report fees if not the work involved in specific essays.
@seniorx2019, congrats on getting into multiple schools at this point. I hope you have done the right thing and withdrawn the app’s of the schools you now have 0 interest in so your potential slot is available to some other applicant who really wants to go there.