Inspiration > Messaging themes groups your creatives by their central persuasive message, not by format or audience. Each theme shows the spend behind it, how many ads are live on it, and a hit rate, so you can see which promises are proven and which are still bets.
Reading the page
Each row is a theme: the actual promise your ads are making, in plain words.
Proven and Testing badges show where each theme stands.
Spend and hit rate tell you whether the money is going to messages that work.
What to do with it
Look for the mismatch: a proven theme with little spend behind it is your cheapest scaling opportunity, and a big-spend theme with a low hit rate is where fatigue or a weak promise is hiding. Ask the agent to break a theme down by campaign, or to draft creatives that push a proven theme into a new format. Themes are computed from your recent creative activity on Meta and refresh as new data syncs.