Hi Jessica,
If I'm understanding it correctly the objects in this list are the objects whose last editor is the person logged in? If so, you can use the entity system member ‘changed by’. This member is automatically updated to the user who made the last change. Then you can retrieve the objects based on the XPath:
[System.changedBy = '[%CurrentUser%]']
Hope this helps!
Amazing, it works, thank you so much!