Stacked bar
Use a stacked bar visualization to compare the proportional contributions for each item to the total, such as sales for products and sales for products each month.
With a stacked bar visualization, you can compare the values of various items in a single column, or show the contributions of items to the total value.
If there are so many bars that the labels are impossible to read, filter the data to focus on a subset of the data or use a tree map.
The following image shows an example of a stacked bar visualization.