Do producers have to make beats?

Could you please clarify for me, are producers obligated to create beats in their musical endeavors? Is it a necessary aspect of their role, or do they have the freedom to choose alternative methods of producing music? Additionally, how do different styles of music, such as hip-hop and electronic, influence the expectations placed on producers to create beats? Lastly, are there any notable producers who have found success without heavily relying on beats in their work?