Mulder, Verbij, Smeekens, Boisvert-Lacroix, Junio, Dubreuil, Poutala, Ihle, Lorentzen, Was, a Korean, Japanese or Chinese guy or even Whitmore are all at the very least serious medal outsiders. Of course Kulizhnikov would have been somewhere in the top-5 of that list as well, and Murashov wouldn't be far back neither, but the fact remains the 500m is a hugely open event (especially now that it's with the unfair one run format).
The main favourites in the 1000m are still mostly there, except for Yuskov (who really is 'just' one of the main favourites). Maybe you meant the 1500m, where there were indeed only two main favourites (Yuskov being one of them) and sadly one of them is now gone.