If you were in the UK like me, I'd say with confidence that this last one is either Scarlet Elfcup or Ruby Elfcup, and is therefore edible! Not particularly worthwhile harvesting though in my opinion. Leave them for the elves
I've seen this one before on cow manure; thin, grey, nearly translucesnt, fruits and spores in the span of a few hours at most. This is growing in a planter containing a compost mix from a local supplier, which has aged manure has one of the ingredients.
This one is growing from clay near or on a root juncture of a very large maple tree nearby, fruiting after about two weeks of minimal rain with daytime temperatures climbing to the high 80s (fahrenheit) in the last few days.
I would say it's in a humid microclimate as the ground here is in heavy to dappled shade most of the day and only a few paces from the stream channel. The cap feels spongy and the ground here is mossy.