The one-stop solution for the fanciest dashboards is PromDash, a GUI-based dashboard builder with a SQL backend. It talks to any number of Prometheus servers via an HTTP API and graphs their data in highly configurable dashboards. Even Graphite graphs can be included.
If you are running big fat systems which are probably bare metal, DataDog may be a very good fit. But if you are running small virtual machines you may discover that its somewhat expensive price can become a real problem.