Sublime

When redundant details shouldn’t be considered clutter

Heatmap

The chart uses consistent placement and weighting.

it skews the visual perception of the numbers.

Note how a few choice words and phrases make this data so much more quickly accessible than it otherwise would be.

Non-strategic use of contrast

categories, it may make sense to leverage that.

varies between chart types.

bars should be wider than the white space between the bars.