rtf (rich text format): the universal rich text standard.
Some document formats will require additional documentation and be documented in the pages follow- ing this list: Scrivener supports the following text document types. From the Scrivener 3 Manual (sorry for the crap formatting, I'm just cutting and pasting here.): It's got excellent search and organizational features. Besides it being an excellent document creator, you can import all sorts of files into it. Keeps data local but you can host the project on Dropbox if you want it in the cloud.
I use Scrivener 3 for creative projects to keep all my materials in one place (used Scrivener 2 for years before this).