hi there i was wondering if this mod added support for varied mob textures so i can run this resource pack - if not do you know of a mod that does?
https://www.planetminecraft.com/texture-pack/recrafted-mobs/

Nah, sorry, that is not planned for CIT Resewn.

Here's what I use to find optifine feature replacements:
https://gist.github.com/LambdAurora/1f6a4a99af374ce500f250c6b42e8754

There seems to be a mod for it in the list.