@actorparent1, yay! a fellow stat nerd! Yes, I definitely agree with your comment :). Interestingly, if you just look on percent accepted and take the median, it is pretty similar for both groups.
@El-Cee, as mentioned above I’m not seeing a huge difference in percent acceptances. The only trends I spotted was that 1)non coached people tend to apply to less than 10 or more than 19 schools and qualitatively 2) coached people reported in the comments that the coach helped to create a balanced list and help support the student through the process. But as @actorparent1 says, these are just trends and you won’t ever know if a coach specifically got a person into a school.