Ordering of the titles.

1) 21 Jump Street:

• Directed by.
• Screenplay by.
• Story by.
• Produced by.
• Executive Producers.
• Director of photography.
• Production designer.
• Editor.

2) The avengers:

• Directed by.
• Story by.
• Screenplay by.
• Produced by.
• Executive producers.
• Another Executive producers.
• Director of photography.
• Production designer.
• Editors.
• Costume Designer.
• Music by.
• Music Supervisor.
• Visual effects supervisor.
• Visual effects producer.
• Casting by.
• Decending order.

3) Dawn of the Dead:

• Marvel Studios presents.
• In association with paramount pictures.
• A marvel studios production.
• Universal pictures presents.
• Production (Name).
• Title.
• 2 names on a frame.
• 3 People on a frame.
• Casting by.

Most of the films we usually see usually start of with directed by. Also, we find out that the clips are always in decending order. However "21 Jump Street" is in ascending order. This is because the ordering of the titles are opposite compared to "The Avengers" and "Dawn of the Dead".