Hi,
For the rows, please feel free to get inspired by the bundled “Small Plane Tiles with Decorative rows“ style, where you can easily define the number of “standard” rows and “decorative” rows, but in the case of rhombus shapes (or any other shapes which would be tricky to configure by simple rules), you should define these areas by Clipping Splines and handle these in separated Generators.
I hope that helps.
Best regards,