Its primarily a miller A solution IMO. Looking at the H5 map of vorticity (which approximates upper air diffluence and consequently lift in the lower levels) we can see that the main energy of the system on the GFS is over the Gulf
Looking at the surface pressure map around 12 hours later we can see that there is a nudge of pressure going up the Ohio valley (due to the H5 amplifying the surface across the East coast) which does indicate a bit of a miller B/C depiction.
However, the real meat of the storm is in Georgia after tracking across the Gulf states. This is really just a miller A but without enough blocking in place to prevent the H5 diffluence from promoting some surface cyclogenesis in the Ohio valley. In order to prevent this storm from cutting we just need the NS to promote enough confluence to prevent the 925/850 low from going up the valley like what happened on Jan 25th. Generally we want either more confluence or the wave to eject from the SW earlier while we still have that cold air push.