Mini boards
Mini boards are a smaller skateboard but they don’t have that ledge in the front, only in the back.

Old school boards
old school boards are a little smaller than regular skateboards

Cruisers
Cruisers are skateboards but no ledge at the 2 edges

Mini cruisers
Mini cruisers are just the same thing as mini boards

Longboards
Longboards are skateboards squeezed at the edges

Everyday skateboards
regular skateboards have a ledge in the front, a flat part and a ledge at the back