There is no hypothetical individual.

This is a question I've had from the very beginning of my journey.
When making UG decisions, common wisdom was that UG just didn't matter. All that mattered was grades, MCAT and ECs. Then I stumble onto this site, and discover two different versions of the same AAMC data table -- one from 2018 on showing UG selectivity is an academic metric of "lowest importance," (consistent with what everyone I spoke to, practicing physicians and professionals in premed advising offices at a variety of schools alike, advised) and the same table from 2013 showing that it is of "highest importance" at private schools and of "lowest importance" at public schools.
What to believe? The adcom who likes to link to the old table would have us (me) believe that the old table, even though it is old, is the real one, and the new table is nothing more than a surrender to political correctness. And then the highly respected
@LizzyM says folks coming from non-top tier are playing with a stacked deck. And then others say the MCAT is very important -- is it important enough to overcome the stacked deck??
@efle implies "yes."
I am just looking to curate knowledge. Personally, I am good. I attend a very non-top tier school. It might be hard to believe

, but I am very plugged into my premed advising office. As a result, I am intimately aware of how my school performs.
While it does not hold a candle to Harvard, Penn, Vandy, etc., my school places several students every year into top med schools. Awesome advising? Maybe. Applicants punching above their weight? Perhaps. Maybe it's just a product, as
@Ehegi suggested, of a dedicated group of students taking advantage of opportunities at a rate atypical of students at similarly ranked UGs. It doesn't feel like the deck is stacked against us. While
@LizzyM did say it is not impossible to break through, consistent results year after year suggests something else is going on besides people beating the stacked deck every year.
I guess my questions are geared more towards determining whether my school is typical or an exception to a rule. They are certainly not to help a "hypothetical KnightDoc" develop a school list.