I cant remember where I got this from, probably a permaculture forum, but below is a link to a Google doc that compares proposed permaculture dynamic accumulators compared to USDA nutrient analysis, and attached is the full list of various plants and their nutrient content (sorry Ive highlighted some ????).

Not a perfect info source, but maybe helpful in finding if there is a deficiency or excess in the soil.

https://docs.google.com/spreadsheets/d/1_oZIJFZPO0r1gwes5TZzTRoPYG9o04jHdMfbGk1SrRU/htmlview#