If you haven't already, you can create memorials for these people and add their grave photos. When you're finished, go to each memorial's edit page and click "Yes" on the "Was this person famous?" option. This will automatically submit the memorial to us for "famous" review.
For some tips on what we look for in famous bios, I recommend having a look at our "Famous Bio Guidleines", linked under "Frequently Asked Questions" on Find A Grave's homepage.