Effectively a standard, disaggregated scatterplot (i.e. Measures on both axes) but where data points are connected by setting Mark type to Line, and the Path is set using a specified Dimension.
The first video was uploaded by The Information Lab:
And the second is via Andy Kriebel:
Andy’s blog post is here:
Ben Jones posted this excellent article back in 2013:
Interworks came up with an interesting “other” type of scatterplot:
The Information Lab partnered their video with this blog post:
As part of #MakeoverMonday, Andy Kriebel found a good use case for this chart type: