> "Plants" covers a diverse group of foods, some of which are the most nutrient rich available to us.

That's some meme. Which ones exactly? The most nutrient-dense foods (per gram / per kcal) available to us are livers, other organs, eggs and ruminant meat --- even before accounting for the latters' vastly superior digestability and bio-availability, and even before accounting for the formers' countless antinutrients. Fresh not processed/salted/cured/etc. https://www.youtube.com/watch?v=xpxqGa1PQc8

The widespread micro-nutrient-power fantasies about vegetation come mostly from back when they discovered ascorbic acid (aka "vitamin C") and how meat doesn't have it but plants do. Quite the feast for marketers! By the time they found out we don't need ascorbic acid per-se, just generally "a sufficient source of ascorbate" (which fresh meat is but preserved isn't --- hence the frequent scurvy back in the day with the 'limeys'/sailors/arctic explorers who insisted on their biscuits and canned meats rather than the game/fish around them), nobody cared for such pesky details..