I quite like The Food Medic, who's a junior doctor in the UK with a specific interest in nutrition. It sounds like you're pretty well informed on the basics already, so she might not deep-dive in the way you're currently looking for though. But she's across a lot of channels (I mostly just use her instagram and podcasts) and so a convenient sort of general ongoing background content choice for me and I often look to see if she's written or spoken on a subject if I hear some new health thing that I want to fact check. I find her a good mix of being super enthusiastic and interested in new research and info, while also really good at keeping things in perspective and very upfront about where there's gaps in current knowledge. Her guests are largely (though not solely) also medical professionals and researchers, so she can sometimes be a good bouncing spot for useful citations or people who do specialise in the actual cutting edge things. Overall I'd say she's very in keeping with The Last Conversation article linked above as being sensible and evidence based and focused on the basics.

Incidentally, she's eating mostly vegan lately - but she's also the first person to interrupt anyone specifically preaching any given diet including veganism and is very open that it's a super personal choice, and that there's loads of diet choices that may be better for some people/there's pros and cons to any diet. So if you're looking for more info in that direction (either for or against) to arm yourself against pushy doctors, she might be helpful there.