Is there a pattern for bar graphs for each item on a nested table?

1. What is a segmented bar graph?
2. What type of graph groups data values into classes represented with bars?

What is a segmented bar graph?

Segmented Bar Chart (or Stacked Columns)

A segmented bar chart are used to compare two or more categories by using vertical or horizontal bars. Typically, the stacked bars show the percentage-of-the-whole of each group and are plotted by the percentage of each value within each group.

What type of graph groups data values into classes represented with bars?

Bar charts usually present categorical variables, discrete variables or continuous variables grouped in class intervals. They consist of an axis and a series of labelled horizontal or vertical bars. The bars depict frequencies of different values of a variable or simply the different values themselves.