Suggestion: Charts should support cells that contain multiple values. Use case: The column represents a question on a survey, quiz, or poll, and the values represent a multi-select answer.
Example: Which of these product mockups do you like? (with 4 choices)
Example: Product Colors (red, blue, green, yellow, brown, black, gray/silver, white, orange) – where a product can have multiple colors
Example: What factors are important to you when choosing a place to live?
What the chart looks like:
What the chart should look like: