Issues making custom textures appear for mobs with specific names

In an example I showed off here. I want a Husk to take on this custom texture when it is given this name. However, ingame when the husk is given that name they do not take this texture.
There is quite a bit I'm likely missing here given I've never made a resource pack but I wanted to give my custom elite mobs custom textures.

I use EMF and ETF
Emissives seem to be working... alright? I haven't figured out how to do things like change the Ghast's fireball shooting texture yet but one step at a time
I am very likely doing many things wrong. Not shown in the screenshots but there is a "random" folder between the optifine and the main folder with all of the mob texture files.

I'm not exactly sure what I'm doing wrong here...