Currently, the Headers are cycled by pressing the Tab key and this FeatureRequest is to improve the behavior and allow arrow navigation between headers, similar to the Kendo UI Grid:

• https://demos.telerik.com/kendo-ui/grid/keyboard-navigation 

Also, pressing Home/End should navigate to the first/last focusable cell in the row, while Ctrl+Home/Ctrl+End should navigate to the first/last focusable element in the Grid.