Experiment with chart types or styles via built in edit feature.
Select existing chart and go to the Plugins > Chart > Edit chart or use shortcut ^⌥⌘E in Sketch. In modal window you can change type of chart, data or template.
You cannot switch between data types (Random, Table, JSON) in Edit mode
Chart types compatible for swapping:
Line chart → Area chart → Stacked area chart → Stream graph → all Bar charts
