Mo' Bends Mod
https://www.curseforge.com/minecraft/mc-mods/mo-bends
[I know this has been requested before as of reading other requests but I've seen important details missing in these said requests.]
This mod is originally a client side mod, animating not only the players model and movements but some of the vanilla Minecraft mods, it has some settings you can modify for your client side but it also has options which can only be accessed if installed on server side. These options include compatibility for the change in player sliders, which I believe is referencing to the more player models editor.
Apologies for not putting this under the mod suggestion link, due to it saying this mod was only client side it immediately gets denied so I wasn't too sure where to put it.
