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That first one is Coprinus radians, the key feature being the orangish mycelial mat (oozonium) the mushroom is growing from.
Those second ones we need to see the underside of and get a spore print. They are suggestive of Omphalotus olearius, Jack O'Lanterns, which are extremely poisonous. They could be any of several other things, too.
The third ones could be any of many different things - again, spore print.