A common concern I have heard in the market is that Keto is a super niche topic and that there aren't enough publishers out there willing to represent their brand.
Data speaks louder than any opinion.
This is the trend of Keto cereals and Keto in general over the past 11 years.
What you are looking at is the top 1,131 Thought Leaders (content producers) mainly in YouTube and podcasts mentioning these above-mentioned keywords 16K times! furthermore, there is an audience of 1B people in this content with a total of 44M impressions. This is fantastic!