Black beans, lentils and red kidney beans are the most antioxidant rich beans. Among lentils (red vs French vs green), red lentils have maximum antioxidants. Details in Dr Greger videos below.

Soybeans are exceptionally rich in iron. Next come Bengal gram / chana dal, moth beans ('moth dal'), cowpeas ('lobia') and lentils.

Which beans are calcium rich? Let's take a look at nutrition data assembled by USDA (USA) and ICMR (India).