Before we started using kendo ui, we implemented this slidemenu. - https://www.primefaces.org/primeng/#/slidemenu
So far I haven't been able to find anything comparable within kendo ui, but the closest thing is https://www.telerik.com/kendo-angular-ui/components/layout/drawer/how-to/hierarchical-drawer/
The drawers could slide between options, instead of expanding out into the page.
Martin, on your team, managed to put together https://stackblitz.com/edit/angular-ckjeuc?file=app%2Fapp.component.ts which is awfully close to accomplishing what we're aiming for, but is lacking the smooth animations between menu layers that we'd like. Ticket ID: 1448501