Stack / layer charts with different, but similar, X axis?

I would like to be able to layer line and area charts without them having to have the same x axis values for the points. Is this possible somehow?

Most common use case is datasets with dates for the x axis and different trends for the y axis. I can usually get the data to live in the same table, but even better would be to be able to have charts with completely different data sources in the same chart.