You're missing a very important detail: what part of the world did you find this in?
It seems like it's something like L. repraesentaneus though the KOH reaction on the cap should have been red. 15-20 minutes should be more than enough time for a KOH reaction but if you waited too long between picking the mushroom and putting the KOH on the cap you may have gotten a false negative.
Wikipedia honestly kind of sucks for mushroom information, the information is very general and they only cover a handful of species.
Region-specific resources are the best but I don't really know any for your region so I'll recommend MushroomExpert.com which is a good site for general North American mushroom info. Here's the page on inkys you may want to check out.
So, these mushrooms aren't really what I would describe as Clitocyboid.
When I think Clitocybe, I think a small to medium fleshy mushroom with a flat or depressed cap and gills that run down the stem. The cap will be fleshy and bald without much ornamentation besides possibly being a little translucent striate around the edge and there likely won't be any veil.
These are smallish mushrooms with thin insubstantial caps which almost no flesh and stems that look hollow and brittle. The caps are heavy pleated and have an indistinct dark "eye" in the center. I can't see the gills here but I suspect they don't run down the stems at all.
I would generally describe that as "mycenoid". A mycena is generally a small insubstantial mushroom with a heavily pleated cap which is usually bell shaped or conical. They have thin hollow stems and and gills which are usually attached to the stem but don't run down it much.
So you could start looking at mycena and similar mushrooms but if you took a spore print (or looked carefully at the gills to see if older ones have spore-colored gills or if there's a colored tint to the shadow between the gills) you might find that these have dark spores. You may also notice that the stems on these are a little wider than one would typically expect from a mycena. In that case you would want to look at the Psathyrella family, specifically the "inky caps" which have heavily pleated caps like mycena.
Most mushrooms people call "inky caps" never really open up like these, they spread their spores by dissolving into ink and letting the liquid carry spores to the surrounding area but there are a few kinds which don't in genera Coprinellus, and Parasaola/Tuloseus. Both of these genera tend to start out brownish/tan and fade to grey/white with often retaining some of the brown in the center of the cap (often called the "disc") which sounds a lot like the mushrooms in this photo.
TL;DR: definitely not Clitocybe, possibly Mycena (or something similar), most likely Psathyrellaceae of some sort. Perhaps Coprinellus Disseminatus or some Parasola species.
No they didn't have dlc, that's why they sold MHG as a full price disc despite the fact that it was the same game as Monster Hunter with extra content, the same as Iceborne for World or Sunbreak for Rise.
Squirrels will actually hang mushrooms in a tree to dry them so they can keep them in their winter food store. They're always pulling the caps off my Xerocomellus late in the season.
Most of the other ink caps (everything besides the shaggy ones with a ring) got moved out of Coprinus because they're actually in a completely different family (Psathyrellaceae). These are Coprinellus.
Hypsizygus maybe? I can't quite make out the gill attachment and whether those are spots or scales on the cap. It would be great if you could pick one and take some close ups.
I candied some Naematella Aurantia recently and was surprised that they actually have a good bit of flavor on their own. Those are a whole different Order of jellies though.
They don't grow in snow while temperatures are still freezing or anything, they grow using the moisture from melting snow once the weather starts to warm up. They just pop up so quickly that you'll often find them poking out of snowbanks which haven't fully melted.
Looks like Trametes spp. AKA "Turkey tails", they look a bit too thick to be T. Versicolor (the turkey tail) but that could be the angle of the photo.
To get a better id, could you please post a close up of the underside? Also, run your finger over the pores on the bottom to see if they change colors when bruised (they probably won't if I'm right about it being Trametes but worth checking).
Trametes usually grow on dead wood rather than parasitizing live wood so your tree is probably in rough shape.
You're missing a very important detail: what part of the world did you find this in?
It seems like it's something like L. repraesentaneus though the KOH reaction on the cap should have been red. 15-20 minutes should be more than enough time for a KOH reaction but if you waited too long between picking the mushroom and putting the KOH on the cap you may have gotten a false negative.