Are these oyster mushrooms? Maybe the one in the first 3 photos is Pleurotus pulmonarius and the one in the 2nd 3 is Pleurotus populinus?
My favorite recipe for oyster mushrooms is to dip them in eggs, dip them in bread crumbs, and fry them. I make these up for breakfast or as a snack whenever I have them availiable. Yummy.
Well, The distinction would require some young specimens and possibly a scope to measure the spores... But it's likely to be populinus. I've grown Hypsizigus, ostreatus and pulmonarius - and it's surprising how similar they can all be when in similar conditions.... Tom Volk's oyster page is a good read, i think there are some cool links there with some species help.... cheers