Thanks for your response, though perhaps i have used the wrong term, It’s not the drawing order (which object is in front of another), but the creation order that i want to maintain. My files have thousands of lines, so creating thousands of layers is not feasible (while possible through gh, it will make the inkscape process considerably harder).
It appears that my issue is identical to:
It appears there is no known logic as to how the pdf order is exported, potentially same for svg.
I will install the gh plugin ‘graphics plus’ to test if its direct export feature maintains the order.