Genre conventions in film openings

For most movie genres, the film openings follow a certain pattern which is:

• first there must be an ident right at the beginning for copyright issues
• The credits must run along the whole opening
• Actors names appear starting with the main ones
• The title of the film is either shown at the beginning of the ending of the opening

but film openings always follow a certain convention depending on the genre

Action film:

1. Cars chases
2. Fighting sequence
3. Chase on foot
4. Explosions

Action films I have enjoyed: Fast and furious series, The Dark Knight, Mad Max: Fury Road, The Bourne Ultimatum

Sci-Fi Films:

1. Mostly set in outer space or in a different, often fictional planets
2. Very advances technology
3. Mostly set in the future
4. Alien creatures

Horror Films:

1. There is sometimes supernatural identities
2. Often set in dark, gloomy isolated locations
3. There is almost always someone that gets killed
4. The is sometimes someone murdering people