Chart Picker
Matrix Bubble Chart
Two categories on the rows
Time on the columns
Alternatives
Line Chart
Clustered Column Chart
Clustered Bar Chart
Panel Bar Chart
Faceted by time
Panel Column Chart
Faceted by time
Heat map
Panel Bar Chart
Faceted by category
Panel Column Chart
Faceted by category
Panel Line Chart
Orbit Chart
Additional alternatives when the data is stackable
Stacked Bar Chart
Stacked Column Chart
Stacked Area Chart
