The bubble chart shows the interrelation between three metrics, or four metrics, when plotted as small multiples.
Open the expander under the 📊 Plot type drop down menu by clicking on the ➕ sign.
You can choose which metric to assign to the x and y axes, and which to map as bubble size, as well as other options.
Values can be plotted in absolute value, as a % of total dataset, as a % of total dataset after filters, or as a % of the result row. The last two options only make sense if you plot a result row.
The plot is run also as small multiples. Just choose the dimension to plot as small multiples.