North Road's SLYR (ESRI to QGIS Compatibility Suite) does that (and rather good code it is too). https://north-road.com/slyr/ https://north-road.com/slyr/ edi

North Road's SLYR (ESRI to QGIS Compatibility Suite) does that (and rather good code it is too). https://north-road.com/slyr/ https://north-road.com/slyr/ edit: I see North Road is actually on your list, but eventual openness not obvious. I think that's clear for SLYR at least.