Final answer:
Only the New York Jets have an official cheerleading squad known as the Flight Crew; the Cleveland Browns, Pittsburgh Steelers, and Green Bay Packers do not have cheerleading teams.
Step-by-step explanation:
Of the NFL teams listed - the New York Jets, Cleveland Browns, Pittsburgh Steelers, and Green Bay Packers - only the New York Jets have an official cheerleading squad. The squad is known as the Flight Crew. The other teams mentioned do not have a cheerleading team as part of their gameday or community outreach programs.