The SUSE Documentation Team use their own set of SVG icons designed to be compliant with the current SUSE brand guidelines.
Use these icons to build any diagram that is part of any piece of SUSE documentation.
Create your diagrams in Inkscape and use svgo or inkscape-svgo to optimize the resulting SVG files.
Please test your diagrams extensively by running test builds of your document to determine whether you should include native SVG or PNG.