How many letters does the top answer for “composer of fight club” have?

The most common answer is leto (4 letters).

Crossword clue: composer of fight club

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

leto 4 letters wd-fact-v3

wife or mistress of Zeus and mother of Apollo and Artemis in ancient mythology; called Latona in Roman mythology

author of fight club 50% similar → palahniuk

composer of cougar club 50% similar → porcaro

composer of fight song 50% similar → platten

composer of final fight 50% similar → shimomura

composer of winx club 50% similar → gillies

director of fight club 50% similar → fincher, norton

wrote fight club 50% similar → palahniuk