Cardioid mics have great rejection to the back of the mic. They are great for keeping extra noise from the stage out of the mic.
Microphones with this pattern include:
Super-Cardioid has more rejection than the Cardioid but develops a small lobe directly to the back of the mic.
Microphones with this pattern include:
Hyper-Cardioid has even more rejection than the Super-Cardioid but also has a larger lobe to the back of the mic.
Omnidirectional miss pic up equally around the entire mic.
Microphones with this pattern include: