Using file names which are descriptive yet structured lets me effectively use search to find specific documents.
Using folders for “inputs and outputs” makes sense for my brain. You can see my comments on this here: A folder hierarchy for "thinking spaces" based on input/output types - #6 by jstu
I have made only very minor changes since then, namely, I’ve removed the b series sub folders.
The reason this feels efficient to me is because, in terms of knowledge building, consulting, and creative writing, I consume and create a lot of material, so folders based on inputs and outputs is functionally efficient in that it creates a mental organization of sorts.