These are tropes about what came "first". One set deals with where/how something started, the other is about things that occur in an order you would not expect.
In the second type, the British market may see a game released first, followed by the anime and manga, but in the original Japanese market, the manga came first, followed by the anime and then the game.
Tropes about origin:
- Anime First
- The Anime of the Game
- The Film of the Book
- The Film of the Play
- The Film of the Song
- The Game of the Book
- Trope Namers
- Web First
- The Zeroth Law of Trope Examples
Tropes about unexpected sequence:
And a trope about a sequence of multiple adaptations: