Not sure is they would qualify as “rationalist” but I’m really fond of the Stronger by Science website/podcast
They’re quite knowledgeable and cautious in their advice, and I find their explanations very clear
If you want to go deeper they have a subscription for a very serious monthly research review, and a diet app that seems very carefully designed
I’m just here to say that we should call it “Solomonoff’s EDM” or “Solomonoff’s EUV process”