Monster Diversity Pack Texture Pack

Monster Diversity Pack adds more variations to mobs in your game.The same mob may have different appearances based on the biome in which they spawn in. For example, a creeper that spawned in a desert biome will have a much more pale and duller appearance than a creeper that spawned in a green biome. Furthermore, you can rename the mobs to change their textures.

More info (from dev):

There are 4 different rarity of the variants you can find:

-Common: They always spawn in their corresponding biomes

-Uncommon: They don't spawn 100% of the time but you'll still find them often in their corresponding biomes

-Rare: There's only a small percentage chance of them spawning in their corresponding biomes

-Extremely Rare: Usually you can only find them if named or if they're spawned trough unnatural means in their corresponding biomes

Creeper 

Common Variants - Common - Snowy - Dark - Desert - Swamp - Deep - Lush - Jungle 

Uncommon Variants - Sunflower - Flowering 

Rare Variants - Sculk 

Extremely Rare Variants - Nether - Warped - Soul - End - Red Mushroom - Brown Mushroom

Skeleton

Common Variants - Common - Desert - Snowy - Jungle - Swamp - Lush (2) 

Rare Variants - King - Pharao - Snow King 

Extremely Rare Variants - Nether - Warped - Soul - End 

Zombie

Common Variants - Common (4) - Desert (4) - Snowy (4) - Swamp (4)

Rare Variants - Sculk

Extremely Rare Variants - Nether - Warped - Soul - End 

Endermen

Common Variants - Overworld (2) - Warped (2) - Nether (2) - End (2)

Blaze

Common Variants - Common - Warped - Soul

Extremely Rare Variants - End

Spider

Common Variants - Common (3)

Cave Spider

Common Variants - Common

Download links are given below!