All the textures that don't already come from base Minecraft/Fresh Animations, as well as the background of the pack icon and all the .jem files, are from Programmer Art Continuation Project (PACP), a ressourcepack by mzov_jen: https://modrinth.com/resourcepack/pacp (Thanks to her for letting me publish this.)

This ressourcepack aims to make PACP compatible with Fresh Animations, a ressourcepack made by FreshLX: https://modrinth.com/resourcepack/fresh-animations

This ressourcepack ("Fresh Animations x Programmer Art Continuation Project"/"PACPxFreshAnimations") was put together by RamhTheWatermelon.