Candlestick chart is a style of bar-chart used primarily to describe price movements of a security, derivative, or currency over time. This chart type is often used in combination with the volume bars chart for technical analysis of stock and foreign exchange patterns.

A Gantt chart is a horizontal bar chart often used in project management applications like Microsoft Project. In the Gantt chart, the horizontal axis represents the total time span of the project, and each bar represents a project task: the left edge indicates the beginning moment of the activity, and the right edge indicates the estimated ending moment. The viewer can quickly see the duration of each task and identify overlapping tasks.

A histogram chart is often confused with a bar chart because it displays data using bars of different heights. The 'true' histogram chart shows the distribution of numerical data. Each bar of the histogram represents the count of data values within the specified range. See more about different types of histogram charts in Excel.

A bullet graph (the name by its creator Stephen Few) or bullet chart (in Microsoft office) is designed to demonstrate the difference between the target value and the actual one. Sometimes there are ranges of performance enabled beside the current value bar – they show something like "low", "medium" and "high" or "poor", "satisfactory", "good" and "excellent" value ranges:

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.

Usually, horizontal lines are added to a chart to highlight a target, threshold, limits, base, average, or benchmark. These lines, for example, can help control if a process is behaving differently than usual. Excel allows you to add a vertical line to an existing chart in several different ways, e.g., by calculating line values for a scatter, line, or column chart, but using error bars is the easiest way to add a vertical line to a chart:

To show progress, highlight current or any date, or demonstrate the difference between the target value and the actual one, you can add bullets to the chart, horizontal or vertical lines:

Sometimes you can give your charts a more impressive view by showing deviations of some real process from its expected flow.

Span chart, also known as a range graph, floating graph, difference graph, high-low graph, shows dataset ranges between a minimum value and a maximum value:

There are many ways to emphasize differences between data on the chart. You can add a threshold value using horizontal or vertical lines, highlight differences with a waterfall, individual values, and so on. Also, you can create a column chart in which the color of each column depends on the value displayed.