This addon adds more zombies and edits the zombie villager! It has the following mobs, it also shows a list of the names of the zombies if you are planning to spawn them using commands:

Fire zombie (mario:fire_zombie)

Modified zombie (mario:mod_zombie)

Creeper zombie (mario:zomcreeper)

Zombie variant 2 (mario:zombie2)

zombie variant 3 (mario:zombie3)

zombie variant 4 (mario:zombie4)

Damaged zombie (mario:damaged_zombie)

Super damaged zombie (mario:weak_zombie)