You forgot 2022, 2008, and 1988. And others I’m probably forgetting.
There is no relationship. It cannot physically exist! The structure of tropical-extratropical teleconnections changes massively (even spatially inverts in some cases) from October to DJF.
In October, *phase-8* MJO/RMM is statistically the coolest/wettest in the PNW. In January, it is the driest/ridgiest. Vice-versa for RMM phases 4/5. There is no spatial similarity to the extratropical responses to tropical forcing over the lower-48 between autumn and winter.
You realize this stuff has zero staying power right? It's a flash in the pan and then gone because it's illogical. I have seen so many evolutions in Seattle over the past few years but people keep coming back to common sense. It's like a pendulum which can swing but ultimately stays close to the center. People eventually revolt.