GALT

Set to 4 different clues across 4 published puzzles, most often "Hair" composer MacDermot — The New York Times, Thursday, 4 August 2011.

4 letters

Every clue on record, most used first

"Hair" composer MacDermotonce
The New York Times — Thursday, 4 August 2011
"Who is John ___?" (question asked in "Atlas Shrugged")once
The New York Times — Thursday, 26 November 2009
Ayn Rand heroonce
The New York Times — Friday, 18 September 2009
"Atlas Shrugged" leaderonce
The New York Times — Saturday, 25 March 1995