How many letters does the top answer for “composer of the lion king” have?

The most common answer is glover (6 letters).

Crossword clue: composer of the lion king

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

glover 6 letters wd-fact-v3

the handwear used by fielders in playing baseball

rice 4 letters wd-fact-v3

grains used as food either unpolished or more often polished

composer of mufasa: the lion king 75% similar → glover

composer of the king and i 67% similar → rodgers

author of the lion king 50% similar → rice, rogen

director of the lion king 50% similar → broderick, ejiofor, rogen

wrote the lion king 50% similar → rice, rogen