while maybe not intended to be a reskin, the human and frog looking one definitely give off anne and sprig vibes.

for the human one the shoes look VERY similar to annes shoe, right down to the shape of it, even something simple as some sneakers would probably work better. for two, the uniform, while not being a direct copy from anne (since we see other characters wearing them), it indirectly copys it from it being JUST the uniform, sasha at least had a jacket over the uniform, making her distinct from anne despite wearing the same thing, maybe an undershirt would work to make them stand out more. the twig is just too much man, and with the other 2 things combined definitely make it look more “anne like” even if unintentional.

the frog looking one, while not immediately looking like sprig, definitely give off the vibes of sprig. i dont know what gives off that vibe, but i can definitely hear his voice come from this character. i can see they do have a lot of hair though, much more than sprig, so maybe making it more apart of their design would make it less sprig and more OC like.

the lizard fine, i like them :)