Chart Picker
Matrix Bubble Chart
Categories on the rows
Two time points on the columns
Alternatives
Slope Chart
Clustered Column Chart
Clustered Bar Chart
Comet Chart
Horiz Dumbbell Chart
Vertical Dumbbell Chart
Panel Bar Chart
Faceted by time
Panel Column Chart
Faceted by time
Panel Bar Chart
Faceted by category
Panel Column Chart
Faceted by category
Additional alternatives when the data is stackable
Stacked Bar Chart
Stacked Column Chart
Stacked Area Chart
