Hard to tell from the pics but they do look like aftermarket non taper c-clip axles with press in wheel studs. Both Moser and Strange have been making these for dozens of years. Oddly I have axles from both companies in cars here and they both have logos on the flanges, easy to tell apart. Yours are blank. I've had a pair from Moser that date back just over 20 years and they even had logos back then. So hard to say what you have but there are a lot of companies making these now like Yukon for instance. The most recent pair of Strange axles I bought they had resorted to putting stick on decals on the flange with their "S" insignia. It could be the decals were removed or fell off?
Sorry couldn't provide a definite answer.