I've used tree-maps for data visualization before too...I've never heard of cb-insights though. Furthermore, I've written an additional piece of code that let's

I've used tree-maps for data visualization before too...I've never heard of cb-insights though. Furthermore, I've written an additional piece of code that let's you decide what colors to use...so it could be blue and white... While I agree that there's some suspicious similarities in content (potentially plagiarism, although you're in the same vertical...) and style, the use of tree-map visualizations isn't plagiarism, nor is using bar-charts with a line on top.