These are allt he same type. Some big some small. Wonderying if they are physcodelic or not. found them in a ditch in the shade under leaves and pine trees. Washington state
looks like chlorophyllum rachodes or C. brunneum. the shaggy parasol. wait for a regular to confirm this though.
I would agree with Chlorophullum rhacodes or perhaps even Macrolepiota procera. There is a look -alike species that is very poisonous called Chlorophyllum molybdites. I am a fair distance north of you, and the molybdites are not found in my area, but I could not securely vouch for yours. A white spore print would be rhacodes and a greenish one molybdites, but it looks like you have picked them all so soon that they had not begun sporulating. Rhacodes are tasty. Get a sporeprint where you got those to be sure.