So many kinds of mushrooms.

Love all the mushroom! :D Bleeding Tooth Fungus looks the cooloest and surgary (might be super dangerous xD)

These look like if they came from Earthbound.

Mushrooms are so fascinating.
As for what mushrooms to add, how about Destroying Angels?

Beautifully drawn sprites! The colors are vibrant, and the details are pleasing to the eye on each and every mushroom. I even learned that a few mushrooms depicted here - ones I previously had never heard of before (e.g. devil's fingers & dewdrop bonnet) - actually exist, which I find really fascinating! Stuff like this reminds me of the magnificent diversity of the fungi species.
Some other cool mushrooms I've heard about are the anemone stinkhorn as well as Coprinopsis pulchricaerulea. The second one out of the two is a more recently-described species hence the lack of a common name.