The real words
Goal 3: show composition
Bar chart sorted by contribution is the first choice for the composition of one entity.
Stacked bar shows the composition of several categories; stacked column shows composition over a time series.
Treemap shows composition when the categories are hierarchical, for instance brands inside industry sectors.
Waterfall shows how a quantitative variable is built up over time or category, and funnel shows a progression from larger to smaller values through nested stages.