I see three types of Neutral

Unaligned. Typically animals and mindless creatures. They aren't intelligent enough to act in a moral or ethical way.

Carefree. These people wander around doing whatever is appropriate at the time, it all just sort of averages out to be neutral. This is the vast portion of the population. They tend to follow the path of least resistance. They are like water finding its path.

Active neutral. These people take an active role to balance the universe. They tend to side with the underdog, sometimes just for the challenge. These people are like fire seeking out its next food source.