It is unlikely than any of these are related to ‘shrooms’ or ‘magic mushrooms’, the psychedelic mushrooms Psilocybe cubensis; but this is Santa Cruz County. I would not know one if I saw one. I think that #4 looks like pancake; and #6 looks like a strawberry. All except #1 were found within only a few feet of each other. They showed up immediately after the rain, in spot that had been dry all summer.
If #1 looks familiar, it is because it is the dreaded oak root rot fungus, Armillaria mellea. It was was at an adjacent building where another less developed colony of the same was featured in ‘The Humungous Fungus Among Us’, https://tonytomeo.com/2018/12/02/the-humongous-fungus-among-us/ . The colony that was featured earlier developed into mushrooms just like those shown here, but by the time these pictures were taken, had deteriorated into a sloppy puddle of chunky goo from a bad 1980s horror movie. It looked like someone ate a bucket of chocolate covered olives, and threw up. To make matters worse, the whole mess was shimmering with the squirming of maggots, and exuded an aroma that was appropriate to visual aspects of the situation. Wow! I am grossing myself out, and I experienced it already.
When I compare picture #1 of the more developed colony of oak root rot to the earlier picture of the less developed colony. I sort of wonder if some of these other pictures are redundant to each other. Could #4 be a more developed form of #3? Could #5 be the deteriorating phase of #2? Well, I don’t know. I am just a horticulturist, not a mycologist.
This is the link for Six on Saturday, for anyone else who would like to participate: