Time to make up for the missing context in the original postings of these charts.
Starting Idea
I was randomly remembering how some people wanted Sprigatito's evolutions to remain quadrupedal and that thought had sort of fused with some thinking about Trials of Mana's class change system, and I started thinking about what a game built around that would be like. I went with light being more human and dark being more beast, but then had the idea to rename them to civil and feral. Feral would focus on power while civil would focus more on versatility and customization. I even came up with a general plan for how each evolution would go and some actual names for each generalized form. I was also kinda thinking about smashability
The Forms
Base/Animal = Basic creature that is rather simple and perhaps cute.
Feral/Beast = More animalistic and fierce. Maybe given some special ability or element.
Civil/Standing = The big thing is that they are now bipedal. Given ability to equip things to somewhat customize their stats.
Fer-Fer/Monster = Make it monstrous/mystical. It should obviously look more intimidating. It goes all in on its special traits.
Fer-Civ/Divided = Obvious division between human and beast parts. Something that doesn't fit a levels of furry scale, like a centaur, a sphynx, or an animal that is able to create a solid illusion of a human. They'd get the ability to use extra actions, some of which could be affected by equipment.
Civ-Civ/Human = Human with ears and tail of base form and maybe differently colored skin. Might use for various fantasy almost-humans like elves, dwarves, gnomes, and maybe even goblins. Would have three character classes that they could swap between with maybe some ability to mix class features.
Civ-Fer/Furry = Pretty much a typical furry. It would fuse the three classes of the human evolution together.
What's Up With The Sword One?
I wanted to try it with something that wasn't an animal and decided to go with an animated flying sword (playing Palworld's Terraria dungeon at the time was certainly a factor).
I considered the idea of its feral ability being the ability to be wielded by other characters, although taking up a character slot while doing so. I felt that having its base form basically be Excalibur stuck in the stone provided a good enough reason for why it can't be equipped until it evolves.
After that decision, I felt that the idea of the sword becoming a sword-wielder made sense for the civil evolutions. Its magic would seep into the stone it's stuck in to animate it into a sort of golem it could pilot. Once it evolved again, its human form would either be the sword having separated and transformed into a humanoid with maybe metallic skin who would get sword-wielding classes (planning to go with Fencer, Paladin, and some sort of weapon enchanter class), while its furry form would basically be its consciousness transferring completely into the stone to turn it into a more humanoid form as its original body is now wielded by its new body.
For the divided form, I was thinking that the main thing would be that while it is wielded, if the wielder doesn't make an attack with it, it would attack for them. I felt that Benefall (pictured with her wielder, Murgath) from Red Dragon Inn was a good representation for what this form could look like, with the sword having a humanoid spirit connected to it.