There are three points to keep in mind about the drill bit : the drill bit material, the drill bit surface treatment and the drill bit type.
High speed steel is the most common material used in the manufacture of bits. Cemented-carbide bits are essential for highly abrasive materials, such as composites with reinforcement of fiber-glass, carbon fiber or kevlar fiber, to assure that they can be used for a reasonable lengh of time between resharpenings.
By the other hand, the steam-tempered bits have less friction due to their smoother surface, so, the drilled material doesn’t stick so easily and also protects against corrosion.
There are three types of drills and the rule is that they ground in different ways: jobber drill, quick spiral drill and slow spiral drill. What varies here is the angle and the material they are recommended for.