There is old web and also internet academia.
DEFINITELY fairy grunge. Very cool
Nintencore is the only one atm.
Urbancore, after hours.
Decora!! It's very close to kidcore, but has more accessories.
Psychedelic has a lot of this, plus vaporcottage.
Plus, cottagecore already has all of the visuals you described. They are all already included in the aesthetic. Trying to mix with something else will not give you what you want, but something different entirely.
Unfortunately, that is all you are going to get. There have been multiple attempts to create a cottage-academia type aesthetic: all of which have been deleted. I suggest you blend green academia and fairy academia into the thing most suitable, or simply say cottagecore but smarter.
Fairy grunge, Grunge, indie
There should be a little box to comment on, but myself and others don't have it. Seems to be a glitch. Are you on mobile?
This is a thing already: green academia. Also fairy academia if you prefer a more elegant feel. No new page needed :D
Of course! <3
Mooncore did exist, but it was deleted and moved to spacecore. So that's your best bet
Golden hour fits, but it's mainly just cloudcore during a sunset. You could talk to the mods about creating a page though.
First pic is decora, kidcore, scene
Second pic is dark academia
Goblincore, Mallgoth, indie kid(see indie)
Maybe so. You'll have to ask the mods about it.