Fenerox
Angels of Starbound
Arcana
Argonian Race Redux
Avali
Avioscale
Blattra
Callistans
Cuteness Unbound - Harpies
De'nelaun
Deep Kingdom (Lyru)
Elithian Races (including Akkimari)
Elves of Tamriel 1 & 2
Everis
False Harpies
Goblins
Indix
Kirhos Reloaded (standalone)
Kitsune (see compatibility note)
Kobolds
Kyterrans
Lastree
Lepidoptians
Maple32
Mechineki
Moontant Menace (not yet released)
Munari
Nebulac
Neki
Neko (see compatibility note)
NostOS
Offworlders
Orcana
Peglaci
Protogen
Sarasinor
Saturnians
Saurian
Scyphojel
Selachii
Space Orcs
The Moogles of Ivalice
The Viera of Ivalice
Vulpes

As of 1.3:

Arachne
Delphox/Braixen
Lycanroc
Hitch
Felin
Scorsheep
Sharkkin
Draconis
Shoggoth and Mindflayer
Vanta
Lucario
Inklings (Squids In Space)
Mollopods
Deerfolk (Fauns and Satyrs)

As of March 24

Sergal
Reploid
Gardevan (actually was done sooner but I forgot to add it)

Mar 27:

Lyceen

Apr 6:

Lamia

Oh Crap I Forgot To Update This:

Tsaiqir
Fragment of Ruin

July 27:

Bunnykin
Attarrans
Penguin Piracy Reborn (that's a lot of penguin, innit)
Woggles
Playable Froggs

August 11:
Zoroark
Hisuian Zoroark
Sylveonoid
Slime

20 October, 2023:
I'm bad at keeping this up to date. All but Limako were already in here for... a while?
Umbreon
smol kobold
Deerkin
Espeon
Saiyan & Namekian
Limako

9 December 2023:
actually on time this time!
Vulpera (currently WIP unreleased)
Lopunny
Calippa Pact (my own mod! currently and likely forever to be WIP but since I was here)