How to add axis labels to Multiple Timeseries DataShader Tutorial Example?

Hi

I have ~1M sequences of equal length ~1000.
I followed the last example in the Tutorial at Timeseries — Datashader v0.16.0 to gain a rasterized XArray of all the time series.
What is the recommended way to embed this in a plotting environment with axis labels?
Bonus points: how to add a color legend aggregating multiple XArrays shaded with different color maps?

I recommend using hvplot as the entrypoint.
https://hvplot.holoviz.org/user_guide/Gridded_Data.html#rasterizing