Three things:
1. I did not check the O.P.s underlying data, but their math itself is flawed. And it indicates (but doesn't necessarily prove) being a 5 star matters even more than shown.
This is because theiir math cheated the 5 stars drafted percentage(especially) making the 5star benefit less glaring than reality. Example: if there are 30 5 stars each year, and 7 were drafted in round 1, that means there were only 23 remained (30-7) for round 2. So 4 of 23 remaining were drafted in round 2 ... Or ~17.4%. Leaving 19 left for round 3.
2. Conversely, just because 5stars are clearly more likely to get drafted highly, part of that may be because 5 star recruits tend to be offered scholarships and attend highly successful bcs schools that: spend extra time developing that talent through coaching, nutrition, strength&conditioning, and early starting assignments because of perception of greatness.
A third thing is to show the draft result relationship to the bcs championship game schools... without regard for their individual star rating. That would be an even more glaring stat.
If I did my research correctly, 26 players chosen in the first round in 2020 or 2021 played for schools that were among the 4 teams (OH, AL, CL, LSU) in the bcs championship game in the last 2 years!
Shazam!