Could be. I don’t use custom themes, maybe some other user that does makes a PR for this 
The problem for us, is the translation between this … and this …
the translation is quite direct, only adding sound defaults (like using unit_of_measurement for the axes) and extra home assistant specific things like filters, $fn, etc.
- Entities are translated into elements into traces for the data array, adding functionality for fetching the data and populating x and y.
- Layout is Layout
- Config is Config
Take a read at GitHub - dbuezas/lovelace-plotly-graph-card: Highly customisable Lovelace card to plot interactive graphs. Brings scrolling, zooming, and much more! again and maybe it clicks
I cannot make a list because there are many thousands of configurations, and I would be just duplicating everything but changing json to yaml. I suggest you read the readme again and take a look at all the examples in the discussions section. It would be cool to have an index of plots with images, that’s for sure, maybe that’s a contribution you could make! You can make a PR without leaving the github website