FreeCAD - Which postprocessor? LinuxCNC or GRBL?

Just wondering which is the best postprocessor to use in FreeCAD. Since Onefinity’s controller is a fork of Buildbotic’s controller and Buildbotic’s controller understands code which is patterned after the LinuxCNC dialect, I first though I should use the LinuxCNC postprocessor (Path workbench → Job → Output tab → Processor). But Carl and Lynn uses the GRBL processor, possibly because of this?