1st one is a wild lettuce (Lactuca sarriola) it gives a white sap it said to be good for colds. leaves are edible when very young.there are two variety one wuth long round leaf and one with those jagged edges as in the pic, sometimes you can see wild lettuces with both shape leaves when grown... but when they are young leaves are long and you can tell they are wild lettuce by the soft spines along the outside of the central nerve of the leaf
2nd one looks like sow thistle (Sonchus oleraceus) it also gives white sap and also is edible here in Spain we call them "cerrajas" and people give it to chikens and partridges
First one is a lettuce relative (the ancestor to our lettuce). It tastes terrible, but someone here on permies was saying if you put it in a blender it's a great fertilizer for your plants. Second is sow thistle, which I love to eat. The third one looks like young echinacea to me.