Consider the option to support the Telerik/Kendo hierarchical grids or grid grouping through separate component templates.

For example,

https://demos.telerik.com/aspnet-mvc/grid/hierarchy 

https://www.telerik.com/kendo-angular-ui/components/grid/grouping/basics/ 

The hierarchical grids are visualized with a master row similar to the Grouping Row template. However, it is currently impossible to directly style the hierarchical master row.


Example for grid groups


https://stackblitz.com/run/?file=src%2Fapp%2Fapp.component.ts