I wouldn't be surprised if the IOD were influencing things, given it's now near record highs. It won't directly cause uplift in the Pacific that tends to lead to the more wintry wx, but given that it is obvious the feature is atmospherically coupled (nearly stationary easterly winds), it is probably tipping the scales that way thru the Indo-Pacific Warm Pool. The IOD has caused there to be persistent large scale llvl divergence there, which keeps sinking air over that region and staved off any kind of -ENSO by suppressing EWBs, as well as projecting warm water onto the dateline region.
Given there is a new downwelling KW, it's likely that ENSO will lean warm this winter, but likely not a full El Niño type setup since it's getting too late for that.
As for some of the teleconnections, -EPO seems pretty likely given the very warm water near Alaska will tend to promote ridging up there. NAO is harder to tell, there isn't as much of a blob of warm water near Greenland, and it has been persistently neutral or positive the past 5 winters, so it's kind of up in the air at this point especially given how it's been -ve a lot in 2019. If one occurs, it may be the fly in the ointment for snow given that, at least in my experience, +NAO/-EPO (& +PNA) tends to mean a dry cold.
Anyway, those are just some random disorganized thoughts from me, and there's a pretty good chance I'm wrong, haha