Problem with all these UI kits that they are almost copy cats from each other, nothing unique and just a reskin. And funny how they always assume the dashboard you will build is a business/KPI/stock centric, as this is the only type of dashboards out there.. what if you are looking to build an engineering one with video streams and/or some widgets/guages/indicators? Or one where you can add some 3D visualization? Or maybe at least some unique data representation other than bar charts?! Tough luck! Build it from scratch.