The title and supporting elements imply all data and details have equal weight. For communicative, state your data story and use supporting elements to create a visual path.

The title clearly states a data story to follow. Guide viewers from most important to supporting details through font size and boldness and choice of colors (see Color).

Having different scales makes an unfair comparison that is hard to decipher.

Keep scales the same in the comparison of both groups.

When visual clutter dominates the chart, viewers can spend more time trying to visually organize and understand the clutter than interpret the data. (Icon credits: Wilson Joseph, AS Design, Adrien Coquet and gzz from the Noun Project.)

By clearing visual clutter, using simple, sans-serif fonts, and simple visual elements (no 3D or drop-shadows, for example). the viewer can easily focus on the data.

Using the same colors would not direct users to your story. Also, maintain proper contrast between background and foreground.

If you use more than one color, make sure they work to support your title. In this example, two subcategories are being highlighted, so it needs two non-competing colors to highlight the data in those subcategories. (See References & Resources > Accessibility & Color to learn more about color and accessibility.) Non-text contrast ratio of at least 3:1 is suggested for accessibility by WCAG 2.1.

Random ordering makes it hard to compare across the categories.

Arrange the categories in ascending or descending order for better comparison.