Marc Lelijveld imports some icons:
In the past, I’ve made a draw.io file for Power BI to help you using the right icons to design your solutions and make architectural diagrams. With Fabric, a bunch of new services and icons have been introduced. This asks for a new draw.io file.
With this blog, I will provide the draw.io file for all new icons and elements of Fabric.
Click through for that link. Also note that you might be more familiar with the new name of draw.io, diagrams.net.