Also, the content type filter works correctly if the Ad accounts used for boosting are authenticated into the Marketing. Please refer to this article "Authenticate an Ads Account" for more information.
Thanks for both responses. I did filter to exclude, but the report seems to be capturing a couple of posts that were promoted (not dark). I will dig deeper into settings.
You are welcome, just to confirm, is the Ad account authenticated into marketing?
If the Ad account is not authenticated into Marketing, there is no way of knowing if a post has been boosted.
Also, I suggest you sign up for a Marketing Q&A product coaching session to clear all your queries.