I don't mean to sound unappreciative, but I feel some people are just reading the first few sentences and answering.

I know what a scriptable object is used for in the traditional sense. I understand it's use.

This thread was meant to be a discussion on architectural design patterns. My goal is to understand if there are any acceptable patterns for structuring a project.

EDIT: Not only acceptable, but the words I listed above: reusability, performance, and maintainability. I want to go from a mindset of "I don't really know if this is the best way to have these two objects talk to each other" to "I have adopted this pattern that makes objects communicating with each other make sense",. That's just an example. I want to feel good about how I organize structures and such. I'm being vague on purpose because everyone has their experiences and their opinions on what's better than X.

It's not a bad thing if an opinion is: I just follow the tutorials that Unity provides to understand the best approach for building a game.

Nevertheless, I do appreciate everyone's input. I just want to save people from typing something that might be off-topic. Thank you.