Awesome finds, one thing to note about urban mushrooms absorbing heavy metals is what substrate they are growing from. The top photo of the woodear is growing from wood and doesn't absorb heavy metals as the rest of the mushrooms growing from the ground would. The third picture down appears to be old oyster mushrooms (also growing from wood). The fourth mushroom image are mycena (these are mostly wood growing as well). The sixth mushroom image appears to be mock oyster (not edible but not poisonous either just bad tasting). The last few appear to be a type of parasol and the brown ones look like mica caps. Mica caps are really good at absorbing heavy metals, they are pretty common and easy to grow. Maybe they could be used to remediate contaminated areas. They are also edible but have a boring taste to them.
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