More Frost mobs

Right now, there aren't enough frost mobs. It'd be great if the developers made the winter-based biomes richer in new variations of already existing aggressive mobs.

At this moment, there's only Stray as the frost variation of Skeleton, and Frostbite as the frost variation of Zombie. We need more variations of certain mobs with their new unique sounds:

1. Frost Zombie Horse

2. Frost Spider

3. Frost Creeper

4. Frost Cube (Slime/Magma Cube variation)

5. Frost Witch

6. Frost Pillagers

7. Iceman (Enderman variation)

8. Frost Skeleton Horse