Progress Telerik UI for ASP.NET Core
To allow further customization, the OrgChart component supports two types of templates—Template and GroupHeaderTemplate. Using TemplateId enables you to render custom content in the body of the node, while with the GroupHeaderTemplateId, you can customize the node header.
The ASP.NET Core OrgChart is one of the many components in the suite with out-of-the-box support for keyboard navigation. Users can use the arrows to open or close a node on focus or to navigate to other items in the chart.