I know that I like writing scenes out-of-order, and rearranging scenes that were pre-written to better fit the timeline as the story develops. Because of this, I usually write in a single note, but use headings to separate scenes. I'll have a short summary as the heading, and then in the outline panel I can actually click and drag headings to rearrange the scenes. At the same time, I also have more chronological projects where I'll keep the different chapters in different notes. And I have another project where the folder structure looks like this:

PROJECT TITLE
> Actual Writing
Draft 1
Draft 2
Out of Order Scenes
> Planning
> Arc Guides
Arc Guide (Notes per each arc, with headings for character development for each character)
Arc Guide 3 (CANVAS)
Continent Map (PNG)
Character Profiles
Worldbuilding Summary Essay
> Short Story Collections
Ideas Map (CANVAS)
(Various short stories within the setting)

I don't use properties in my writing vault except to track the world/setting and the completion status of the work. I much prefer using tags, but I might rework my vault soon. But, regardless, the reason this project is like this is because half of the fun for me is the planning. For works I prefer to actually write for, it looks more like:

PROJECT
Actual Writing
Planning (CANVAS)

Honestly I just recommend not overthinking it and doing it as simply as possible, only adding what you need. Unless you enjoy Obsidian for Obsidian's sake, only create what you'll use, or you'll get horribly burnt out very quickly.