Warrant officers are a leftover from an era when you had to be nobility to become a commissioned officer. Today a lieutenant is just a kid with a college degree, and a lieutenant colonel is someone who did an MBA and was promoted into middle management.
Roles that historically required higher education – doctors, lawyers, and chaplains – are typically commissioned officers. Air forces similarly have commissioned officers doing the actual fighting. While they are not in management positions, their status and responsibilities are comparable to commissioned officers in other branches. In some cultures, the same extends to special forces.