I don't have time to see if anyone else already suggested this... Sorry.
PROBLEM: As the files I create increase, it's getting more difficult to locate specific ones when trying to open them.
SOLUTION: Filter the types of user-created files that are displayed in the "open file" dialog box according to the type of file I hover my mouse over on the "create new" adjacent dialog box.
EXAMPLE: If I am wanting to open a certain "note" file... just click "File", hover the mouse over "Note" (as if to create a new note... thereby filtering the files in the "Open" list to show only created notes), & select the note file I'm searching for.