To avoid some of the embarassment from yesterday. Here's the sourcing information that I have. Though, it's possible that these are incorrect because I'm reading the static_url field from the custom_emojis json file on the server and that is apparently handled a bit differently depending on server software?
Tech.lgbt is the home of neocat_sign_ja and neocat_sign_nee
Pleroma.envs.net is the home of neofox_bulging_eyes
The two Drake emoji are named neofox_drake_like and neofox_drake_dislike on pleroma.envs.net and tech.lgbt. Neopossum and neocat variants of it exist on those two. The foxes also appear as neofox_drake_yeah and neofox_drake_nah on Meow.social.
The three emoji tall version of neofox_legs is from fedi.catboy.agency.
neofox_pat_neocat is on void.rehab. It is called neofox_pat_cat on woem.men
neofox_rolling_eyes is from hat-eine.entenbru.st
neofox_cool_sob is from pleroma.envs.net but there is a neofox_sob_cool on kitsunes.gay.
neofox_takethis is from kitsunes.gay.
neofox_think_about_it is from pleroma.envs.net. It is called neofox_think_smart on woem.space.
neofox_two_guns is from pleroma.envs.net. It is called neofox_guns on woem.space.
neofox_catmask_pleading is from woem.space or hat-eine.entenbru.st. It is called neofox_pleading_catmask on kitsunes.gay.
neofox_cofe_spill is actually on a bunch of them, now that I noticed there's supposed to be a spelling error.