FYI there is also Gramps Web (disclosure: I am one of the main contributors) which has this family tree view:
It’s not a report like Narrated or Dynamic Web but an full Gramps instance running on a web server that you can synchronize with your Desktop Gramps. Admittedly, installing it is not trivial, the (IMO) easiest option at the moment is described here:
It has advantages and disadvantages compared to the web reports, depends on your use case.