I have to say perennials are the best & multiplying or even invasive edibles are best.
There are three main groups
1) Greens- leaves & stems, collard, Tree Kale, asparagus, Good Old Henry, Sorrel,
2) Starches like Jerusalem Artichoke, Ground Nuts,
3)Fruits like BlueBerries in acid soil, Raspberries, pears, apple, plums, nut trees to name few.
4) herbs like Lovage, garic, mints, horse radishes.
Then fill in with annuals Like beans, peas, corn, potatoes, radishes, turnips, beets, carrots,Swiss Chard.
What I like about Blueberry plants, is they multiply & 20 plant are now one hundred, as do my Southern raspberry, which I have to mow between the rows every Fall. Strawberries are another plant that multiply.