Some agarics I am struggling to ID

[Kveldssanger]

I have uploaded these to a host site so that you can zoom in.

 

This first one strikes me somewhat of Psathyrella piluliformis, notably with the clay-brown gills, though the ones in the images appear slightly sinuate (if my understanding is correct). Potentially also could be Simocybe sumptuosa?

 

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The second one has medium brown (near walnut-coloured) spore, white adnexed gills (stained by the spore), and is a saprotroph of wood (host was a fallen broadleaved stem, either ash or oak). The cap has a nice umbo, too. I'd have said Pluteus but the gills aren't free. Using Jordan's key doesn't take me anywhere near where I should be, so I must be using it wrong. Cap was very wet.

 

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This lot was on some deadwood in a broadleaved deciduous woodland. Far more caps than just this little cluster. Slightly akin to a mature lot of Mycena galericulata? The gills aren't anywhere near pink, though. I have stumped (no pun) myself with this one.

 

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These guys were on a fallen birch log. The caps looked and felt squarrose, though I cannot identify a Pholiota species this would represent. Lepiota also uncertain of as the flesh isn't white; notably on the stipe.

 

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