As you're starting to see, there are endless styles of animations! Here's a short overview showing the different layers of animations needed to build this older commercial we created for Homegrown kids.
The drawings were hand drawn on paper, scanned, tidied up and colourised digitally. Mouth movements were drawn separately and roughly synced to the voices. All in all, there were about 38 layers of drawings combined and animated for this 30 second spot.