This may not directly answer your question, but the Huberman Lab podcast [1] is done by a Stanford professor and generally includes very high quality summaries of recent research. He also provides actionable suggestions (though sometimes, the research is so new that they're still in the process of figuring this out). You can scroll through the home page and see the variety of topics he covers, there are a number on gut health.

[1]: https://hubermanlab.com