OneDrive uses SharePoint Online document libraries "under the hood" to store its files. You can create document libraries in SharePoint Sites and add them as shortcuts to OneDrive. This allows you to access the files in any of those libraries via OneDrive, in the same way any other files and folders are used. At least that's how it appears in the Microsoft OneDrive app. These shortcuts don't appear in MobileSheets. Here's what they look like in OneDrive...
