I realized a while ago that zombies come in three different types. I've named each of these types, "Formulas" and they go as such:
Type 1, Romero formula: These types of zombies are your typical "Dead guys crawling out of their graves", a relatively simple formula that you'd see in earlier zombie movies, such as George A. Romero's films, these zombies are essentially, the living dead.
Type 2, Virus formula: These types of zombies are people that have been infected by some type of wide spread virus causing symptoms such as aggression, extreme mutation, and loss of all rational thought. This a more contemporary formula that you'll often see in movies nowadays, but also very often in video games.
Type 3, White Zombie formula: These are people that have been turned into zombies via way of Voodoo, Brainwashing, or some type of force that turns them into mindless mooks under someone else's command.
Please, feel free to discuss the different types of zombie below, do you have any formulas I missed? Please tell me!