Yes it’s edible. All brassicas are. Whether it’s palatable and how it’s eaten are up to you to decide.

Thalictrum lucidum

It's very difficult to ID many grasses without seeing blooms and closeups of leaves and roots, but that looks suspiciously like Sorghum halepense, johnson grass. Is that growing in a wild/unmown area? If it's a maintained area, you do NOT want johnson grass in it. It is a very aggressive spreader.

Perhaps Lotus corniculatus - Bird's-foot Trefoil