Why yes, they even look similar.due to the advancement of modern hollow point technology & reliable expansion the difference between 9mm,40S&W and 45acp is not as big a factor as it used to be
https://www.luckygunner.com/labs/self-defense-ammo-ballistic-tests/ look up your favorite ammo ( in your calibers ) and see what the expansion is
view the expansion & penetration of 9mm,40S&W and 45acp there isn't a lot to be gained by going with a bigger caliber. ( more recoil& slower shot to shot time)
also a small 9mm can hold more rounds ( g-19 15+1) faster shot split times and more shots between reloads is a good thing.
I have been shooting & training since the 1980's, and most of my training out side of military is from the Jeff Cooper play book.
it used to be that in the 80's& 90's hollow points would open from 20 to 30% of the time "on a good day" so the bigger calibers were better stoppers
now we have a lot better expansion from modern ammo.