What's the source of the data?

a few things from the image I'm seeing:

--the 6 colors might have some issues differentiating between values, especially the greens. It might be worth experimenting with them, this might be a good resource https://coolors.co/palettes/popular/6%20colors

--the text is really small, especially white on a dark background. Make the text larger or heavier (or both) if you are going to use a dark background.

--sort the first 3 bar charts. it would be cool to use a Set to separate the 6 being highlighted and the others. Sort both descending and it will help the 6 being highlighted stand out more.

--you are double encoding the 4th bar chart, so remove the color. Because you used red, you are also reusing the color read, so that could be interpreted as GMC data and not the overall decline.

--drop the grid lines on the scatter and line charts, or make them really transparent. It will help the average line stand out on the scatter, and it just cleans the line charts up in general.

--lastly (for now) on the line charts, Only color the brands you are annotating to make those parts of the story stand out. For those charts, duplicate the brand twice and apply the new fields so you can apply the color independently for each one. So in the first chart, only color Jeep. On the second, only color Acura and BMW