There are four main voice types.
Soprano – Soprano is the highest singing voice, both female and male. Some famous singers that sing in soprano are maria callas, Cecelia Bartoli and Renee Fleming
Alto – Alto the lowest adult male singing voice, ( especially used in church choir/groups ), some famous singers are Tracey Chapman, Anita Baker and pasty Cline.
Tenor – Tenor is a high (adult ) male voice, this voice is also their natural voice, One of a very famous singers sing in tenor. Bruno mars is the most famous one, There is also other famous ones called charlie puth and very famous, Freddy mercury.
Bass- Bass is lowest male voice, it only is male voice with rarely female voice. Some famous singers are J.D summer, Josh turner and Jonny cash.