The Clue Top YouTube channel "Mostly___"
The Answer SANE
The answer to the crossword clue is "SANE." This fits because "Mostly Sane" is a popular YouTube channel run by a content creator named Prajakta Koli. She shares funny videos and relatable content, making her channel well-known among viewers. The name "Mostly Sane" suggests a lighthearted take on everyday life, which resonates with her audience.