I don't believe there are levels of lucidity. You are lucid or not, and quality depends on techniques performed the moment after becoming counscious. For example, you end up in your room and you barely understand that you are dreaming, your vision is blurry, so you touch everything around, rub your hands, look at something from a very close distance and your lucid becomes "high level".

Although, there are cases where you don't fully understand that you are dreaming, and your awareness level is too low to become lucid.