There is exactly one manufacturer who claims entirely magnetic bearings - Sunon. Enermax has something similar. I think we'll have to wait for some patents to expire before they become widespread. In the interim we get "nano" bearings that look like they are ceramic sleeve bearings, sealed sleeve bearings (FDB, etc.) and ball bearings. I doubt we will ever see the end of sleeve bearings - they're the cheapest kind.
As for OP's problem: do your fans use stinky oil?