How many letters does the top answer for “wrote ghost” have?

The most common answer is goldberg (8 letters).

Crossword clue: wrote ghost

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

goldberg 8 letters wd-fact-v3

United States cartoonist who drew intricate diagrams of very complicated and impractical contraptions that accomplished

moore 5 letters wd-fact-v3

British sculptor whose works are monumental organic forms (1898-1986)

wrote ghost whisperer 67% similar → hewitt

wrote the canterville ghost 67% similar → wilde

wrote 1q84 50% similar → murakami

wrote 2666 50% similar → bolano

wrote 4 3 2 1 50% similar → auster

wrote q11368 50% similar → kernighan, ritchie

wrote q13415681 50% similar → hamill

wrote q134773 50% similar → zemeckis