Where to look to beautiful and inspiring visualisations
Displaying data requires creativity and practice at the same time otherwise you're bound to use only the techniques you already know.
A cool place to learn from other's visualisations is https://www.reddit.com/r/dataisbeautiful/
This site shows how to either implement or use lots of useful charts in pure python. Most of the examples are using either #seaborn or #matplotlib and some even use #plotly ( #dash ).
Since it contains a multitude of charts along with use-cases and interpretations for them it might be a good reference point for learning new visualisations.
This site was the main reference for the Dendrogram heatmap visualisation, useful for displaying grid-search results.