Very hard question to answer.

Commercial lights fall into two groups more or less:

Group one are normal residential lights that are 'battle hardened' ie made industrial strength - brighter, vandal proof, longer lifespan etc. Any light you can think of has its commercial equivalent. For example: downlights and shop light, small flood light and industrial flood light.

 The second group consists of lights that are purely for industrial applications - high bay lights, stadium lights, LED panel lights etc.

There are too many of both groups to count.