Here’s a few I’ve read/watched recently, more cholesterol focused than diabetes but I believe they are related.

https://peterattiamd.com/the-straight-dope-on-cholesterol-part-i/ - A pretty detailed guide on all aspects cholesterol. Referencing could be better, but still not bad.

https://pubmed.ncbi.nlm.nih.gov/32653422/- Review and Meta-Analysis on egg consumption and  cardiovascular disease.

https://www.nature.com/articles/s41598-018-38461-y – an interesting one, specifically figure 2.

https://www.youtube.com/watch?v=DXKJaQeteE0 – a nice easy to understand video, no real detail though.

To me it all just kind of makes sense. Carbs trigger an insulin response, today’s carbs are supercharged, therefore pancreas gets worn out. In addition, to that the carbs affect the cholesterol, 2 birds with one stone.

Having said all that, just cutting out majority processed foods would probably be enough. But low carb, with lots of vegetables IMO would probably be best.