As above, I’d export all the NETLIST choices from OrCAD, and then use the one that is easiest to parse, or has the most information.
NETLIST formats are usually quite simple.
Because KiCAD can import PADS (some minor header fixups may be needed), that’s probably a good place to start.
What you will likely need to do, is some sort of table for footprints mapping, so that whatever name OrCad used, can be replaced by the KiCAD library name.
Then, you need to check for things like alpha-pin names, and how those match up.
Some useful reading around NETLISTS