You have created a Dynamic Post Boosting campaign and it's been doing well. However, you've been wondering which creatives performed better and want to see them in a list. In this case, we recommend you to follow these instructions:
Create a report or use the Metrics tab.
Choose "Creative" as level.
Choose the following metrics:
Facebook Post Link
Instagram Post Link
Creative Post Link
After following these steps, you'll be able to see the creative links and the post links of the deleted and still running ads.