A cascade diagram, also known as a waterfall or bridge chart, is a special type of chart often used in accounting for financial statements. This chart represents positive and negative cash flows as ascending or descending bars of different colors. Each column except the first one starts at the endpoint of the previous column:

A mirror bar chart or double bar chart is a special type of bar chart (actually, a simplified version of a diverging chart referred to as a comparative histogram) that displays two sets of data comparatively side by side along the vertical axis. The chart resembles a reflection of a mirror, hence the name "mirror bar chart":

To analyze poll or survey results, it is important to see the actual numbers and the difference between all negative and positive answers. Often such results are presented as a spread of negative and positive Likert values, such as "Strongly disagree" and "Strongly agree".

Gantt chart is a horizontal bar chart that is often used in project management applications.

Diverging stacked bar charts, also known as centered stacked bar charts, are widely used to display the results of surveys, polls, or questionnaires analyzed through a ranking scale such as a Likert or numeric scale.

Span chart, also known as a range bar graph (range column graph), floating bar graph, difference graph, high-low graph, used to display the specific variable value range. Span charts are ideal for comparing ranges, and typically, each variable represents a particular category. All values for the selected category fall between minimal and maximal values that correspond to lower and upper bounds of the interval.

In Excel, you can create a variety of different charts to compare two or more data sets. When comparing two data sets, charts such as butterfly, mirror, tornado, etc., are often used, where the differences in the data sets are not always clearly visible.

Excel can display the data series in an inconvenient order for bar charts. For example, if you have a table with tasks for a Gantt chart, after creating a bar chart (see how to create a simple Gantt chart for more details), you expect to see tasks on the list arranged from top to bottom. Unexpectedly, Excel displays them in the reverse order:

Nowadays, icons, logos, and abbreviations often carry more information than the textual names of companies, brands, applications, games, etc. To create memorable charts and faster understanding and recognition of information, instead of the names of countries, brands, etc., you can substitute the corresponding pictures on the axis of the charts.

While the secondary vertical axis provides a way to display two different types of data for the one time range, the secondary horizontal axis allows you to create a chart showing two data series for different time ranges: