For example, check out this Betty Crocker page where there's about 300px of whitespace at the top, a huge useless picture of flour, and a navbar that doesn't quite stick to the top of the page (viewing on Firefox) https://www.bettycrocker.com/how-to/tipslibrary/charts-timetables-measuring/equivalent-measures-abbreviations
Another example is allrecipes.com. I think it fares pretty well on Desktop, but on my phone I notice they insert adds throughout the ingredient list and instructions. Also met with a full-screen popup from Amazon about Cyber Monday.
There's gotta be some plain and simple sites out there, and I'd like to hear about them.