I built my own a few years back for similar reasons: https://github.com/imranghory/treemap-squared https://github.com/imranghory/treemap-squared The code is p

I built my own a few years back for similar reasons: https://github.com/imranghory/treemap-squared https://github.com/imranghory/treemap-squared The code is pretty straight-forward if you want to customize