If no one responds on the fourth pic, I'll look it up in my notes (not currently handy). If it's the one I have in my yard, leaves when young are edible. The first pic almost looks like my sorrels but it's hard to tell from that single pic and angle. I don't recall ever seeing the third one, sorry.
The first one is yellow dock (rumex crispus), the third one I can't tell without a closer look at the flowers, and the last one looks to be cat's ear, but I'm no 100% sure, how long are the leaves? (it is most definitely in the aster family)
Mingo: I double checked the info you gave me. It looks to be correct from the descriptions I read. The cats ear one the leaves are about 6-8 inches long. I'll try to take a picture of the flowers of the 3rd one. Thanks