Fishbone timeline
Fishbone timeline (also known as Fishbone diagram, Ishikawa diagram, herringbone diagrams, cause-and-effect diagrams, or Fishikawa) is generally used to show the causes of a specific event. Fishbone diagrams are commonly used in product design, defect detection and prevention, and displaying factors causing a specific effect.
This demo uses amCharts 4 TimeLine add-on.
Demo source