Your post gave me food for thought (heh). It sounds from your description like “mushroomy-looking things” would be an area of developing expertise for a good segment of any incoming fungi-identifiers. Coincidentally I’ve recently started nudging a few of those things out of Kingdom to Class.
So, now I’m motivated beyond my original intentions*, for the same fun as kicking butterflies from the Lepidoptera pile because experts are happy to look at that Superfamily. But my fun means your notification spam folks, if you’ve been id’ing anything lazily as Fungi. My apologies for that. Please mute me or whatever the trick is when you get bugged.
*eg, looking for mislabeled slime molds