How many letters does the top answer for “appealing to the general public” have?

The most common answer is favorite (8 letters).

Crossword clue: appealing to the general public

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

favorite 8 letters wn-def

something regarded with special favor or liking

favourite 9 letters wn-def

something regarded with special favor or liking

suitable for the general public 50% similar → exoteric