We're in the middle of farm ground, so there's not much foraging around here unless we drive somewhere. Our weeds vary somewhat from year to year, whatever the wind is blowing in.
We just got our first batch of dandelion greens, have dug roots for tea, eat the flowers. I picked a tub of flowers one year then was too tired to make the jelly, so I bagged 'em and put 'em in the frig. The next morning they looked wretched, so I pitched 'em.

Lambsquarter for sure, wild hemp leaves, purslane when I find it, wild violets when I take the time to locate them. Mallow is nice, wood sorrel, Shepherd's Purse (a lot of work for little reward). We have some kind of dock here, but by the time I see it, it's past it's prime.
Of course, wild sunflowers. But the seeds are so tiny, I thought the better use would be for chicken feed. I always left the wild sunflowers in the chicken run. Gave the birds some shade, then seeds dropped later.