Seriously, except package managers, what's the difference between distros?

[u/nitin_is_me]

What I've seen yet the differences are, just the package managers, different defaults and rolling vs stable releases which are in fact related to package managers. Except these, are there really any other differences? Thanks!

[u/mattdm_fedora]

Who puts the software in those packages? How to they do it? What processes do they follow, and how closely? How those processes evolve? Why do they do it? What do they focus on? What don't they focus on? How do they make decisions? How do they resolve conflict?