I found that via this Atlantic article, "The Six Main Arcs in Storytelling, as Identified by an A.I./A machine mapped the most frequently used emotional trajectories in fiction, and compared them with the ones readers like best."
The 6 shapes are:
1. Rags to Riches (rise)
2. Riches to Rags (fall)
3. Man in a Hole (fall then rise)
4. Icarus (rise then fall)
5. Cinderella (rise then fall then rise)
6. Oedipus (fall then rise then fall)