Search for OneDrive files that have been cached on local device

1. Install Everything Search by Voidtools
   https://www.voidtools.com/
2. Set Everything to index attributes by going too Tools > Options > Indexes
3. Put the folder location in to the search bar using " quotations and then put the following at the end " !attrib:d !attrib:h !attrib:o"

This is based off testing but files with the P and O attribute appear to always be available online only, while files without always appear to be available offline.