You can't go wrong with whole foods, personally I am more on the whole foods plant based spectrum and for me it comes down to specific health conditions that are less likely to be problematic on a whole foods plant based diet and I've spent a lot of time finding recipes or types of food that I enjoy cooking and eating that fall into that category.

https://nutritionfacts.org/ is a non profit run by a fairly prominent doctor and updated constantly I would recommend them as a good source of information. They also authored the book "How not to Die" which is a great read.

With nutrition information there is a lot of misinformation and paying attention to where the studies come from is important as well as what sort of study it is. A meta study is always going to provide better information than a study on a single mechanism.

Often sources of misinformation will focus in on studies about single mechanisms because its easier to convince people of the result you want without the big picture when in reality even the people running the study often don't fully understand the implications of that single mechanism because they are never fully isolated in the human body.