Will lean on the RGEM and 3K NAM for precip types. Even an hour difference if there are heavy rates makes big difference in accumulations and the globals won't nail that to the hour as well.
How much snow is really going to depend on where the heaviest bands set up before the flip. Look at WB 0Z GFS compared to 18Z. Many of us lost several inches but there are those southeast of DC that picked up more this run.