Complex sentence: Braun has a YouTube channel with Kyle Kaplan and Vincent Pergola called the Breakfast Toms, which is is a group of young filmmakers that write, direct, and produce its own media.
Split into simpler sentences: Braun has a YouTube channel with Kyle Kaplan and Vincent Pergola called The Breakfast Toms. The Breakfast Toms is a group of young filmmakers who write, direct, and produce their own media.