I get you this can be really useful, I’d agree with @JonathanBuchh I use a lot of different symbols as prefix to notes to determine certain meaning.
For example
⧉ = zettelkasten notes
⟐ = private
⭔ = project
I have a lot of those, with time I’ve decided to replace a few of them for tags, since it can be much simpler to use tags. but the benefit of using symbols is that it sorts groups of files in a nice organized fashion. This is really helpful if I want to make bulk changes or move a series of files elsewhere.
I insert those symbols with a text expander in my case espanso, which is a bit tricky to set-up but it’s free and an excellent tool once you get the hang of it. If not espanso, there are other great paid tools much easier to use.
Hope that helps!