Zombie Outbreak Emergency Response Team T-Shirt

Chemical: empowered by some sort of toxic waste/chemical
Radioactive: brought to life through the clever or accidental use of nuclear energy
Voodoo: a Voodoo Master controls these types. Once he/she is gone, the zombies usually return to the dead.
TechnoZombie: Dead corpse animated by means of some sort of technology that usually goes haywire
ElectroZombie: a freak electrical storm/accident causes the dead to rise
The Infected: a rogue microorganism/virus that causes the living to act a lot like Chemical zombies
OCD zombies: These undead come back for a very specific reason. To finish something they started. Once the task is completed, they usually R.I.P.
HellSpawn: the dead are usually controlled by a spirit/demon/evil entity
AlienControl: ET’s use the legions of the dead to do something dastardly to the living
Cursed: The afflicted are undead until the curse is broken.