Hi @ChrisPren , @Mary_W_W , and @danna_duncan1 ...
Apologies for this question being out in the Community for so long without a solution. I just looked at the Commons Guides, and I found the following:
How do I update a resource I previously shared to ... - Instructure Community - 1813 (canvaslms.com)
Pay particular attention to the first paragraph in the light blue box at the top of this Guide. It states:
If you modify a resource (learning activity) in Canvas that was previously shared to Commons, you can share the modified resource to Commons again to update the existing resource in Commons. Only the user who originally shared a resource to Commons can update resource content. However, administrators can edit resource details.
However, as @Mary_W_W mentions, it is a bit odd that the screenshot from @ChrisPren does show "Author(s)". I'm not sure what to tell you there, unfortunately.
I hope this will help in some way.