In order from tastiest to least:
Purple Dead Nettle:
Another commonly seen edible is the wild violet:
Next is chickweed:
Fourth on the list is dandelion. Although a bit bitter, the blooms and greens are still tasty in salads.
Lastly is red clover. It is known to be a great herb for health however, it is even more bitter than dandelion. Best to use only the most young and tender parts. Red clover should be easy to differentiate from white clover. A) because it is usually just larger (you can see the white clover in the background of this picture, and B). because it is fuzzy.
These are great weeds to cultivate in whatever green space you maintain. I've been transplanting some into my garden to make sure they are safe to eat since we have a lot of dogs that live in the area. Happy Spring!