I want to achieve this map. I was thinking it's possible to using D3 Treemap so I used D3 but I want only hover over parent elements for tooltip and inside if I move cursor on children so tooltip only appear don't need hover or active stage.

Here is reference website: https://finviz.com/map.ashx?t=sec

Screenshot:

https://i.stack.imgur.com/yenRd.png

I almost done using Treemap. Please check once.

https://codepen.io/jskrishna/pen/wvpbMXR