old:
https://matplotlib.org/devdocs/gallery/text_labels_and_annotations/fancyarrow_demo.html#sphx-glr-gallery-text-labels-and-annotations-fancyarrow-demo-py

new:
https://output.circle-artifacts.com/output/job/2450cee8-39a0-4310-bbea-fa34c99ca0b5/artifacts/0/doc/build/html/gallery/text_labels_and_annotations/fancyarrow_demo.html#sphx-glr-gallery-text-labels-and-annotations-fancyarrow-demo-py

Note: doc build failure is likely unrelated, see#29802.

I kinda want a box around each entry but not sure that it would make things clearer.

Not sure that's better. It looks more imbalanced because the number of parameters vary strongly.

what about a faded or dotted grid? I like the boundaries but I get how here it starts looking cluttered

Feel free to play around if you like. But I think if we add boxes, we need another approach to the titles. They don't really make sense in large boxes.

The boxes don't really work there. At most, I'd say a line down the middle could work.

I wouldn't include boxes. I'd add a bit more wspace between the columns.

Why are AngleA and AngleB all specified in these but set to zero?

The constructor for the axs is needlessly complex.

Why are AngleA and AngleB all specified in these but set to zero?

Do you mean the parameter blocks in the rendered figure? That's

Each style can be configured with a set of parameters, which are stated along with
their default values.