Drones are relatively new machines and there is no official and standard classification of drones. We will give our best to make such categorization based on different standard.
Types of drones by number of propellers:
Most sold model is Scorpion Tricopter.
Drone with four propellers – called Quadrocopter
Most of the UAVs and drones are quadcopters. They can be further categorized into different types based on their size to:
regular size drones
They can also be categorized by their range to:
very close range drones
close range drones
short range drones
Drone with eight propellers – called Octocopter (see the offer on Amazon)
Multicopters with six propellers or Hexacopter (see the offer on Amazon).
Based on their equipment, drones can be categorized to:
Drone with camera
Drone with stabilizers
Drone with or without GPS
FPV birds with one FPV glasses
Of course you can combine all the features of the drones in one drone.