Bar Chart Race
The standard bar chart is animated to show rankings and change over time. The alternative is a multi-line chart.
Tutorials and Guides
Moratorium On Bar Chart Races; When Impractical Visualization is More Practical (The Process #68)
The dataisbeautiful subreddit announced a moratorium on the ever popular bar chart race. The frequency of submissions that used the method got out of hand and spam made it all the less savory. Still, the method holds value.