Composite charts
Charts where multiple datasets interact visually, or multiple chart types share an axis.
Area chart (filled line)
Line chart with fill: true fills below the line.
Stacked bar chart
Bar chart with scales.x.stacked: true and scales.y.stacked: true.
Mixed chart (bar + line)
Use per-dataset type: to combine chart types. Parent type: is just the default for datasets without their own.
