The term 'Circus Lineup' refers to the performers and acts that make up a circus show. The crossword solutions for this term are 'Acts' (4 letters), 'ARRAY' (5 letters), and 'IDS' (3 letters). Acts refer to the individual performances, such as clowns, acrobats, and animal trainers. An ARRAY is a group of performers that work together in a single act, such as a troupe of trapeze artists. IDS are the identifying numbers or names of the performers, which are used to keep track of them during the show.