Noded Matrix table

Hi, I'm a newbie to Power BI and am struglling with a relativly simple data matrix formating issue.

What is the visualisation that creates noded groups - like this:

Where  the Parent nodes are not repeated in the grid.  

I have seached the store and cannot find a custom visualisation - and the defualt matrix visualtions seems similar to that desired.  but I can only display low level data through the "drill down" feature.   This is OK, but not as detailed as that presented above.