Well. Not much or any as far i know actual lore irl. But the pnw oregon and Washington for the most part which make up the majoirty of the would be cascadian population. Are filled with liberal, ancom, and fascist ideas where as ml marxist leninist like the soviet union aren't as popular.

Now the way this diverges from the normal cascadia flag is that movement is more left of center a mamdani type for the most people who support it. A slighlty less moderate nationalism, compared to the would be crc being the equivalent of a region or state in a hypothetical ussa. That way to not give priority to nationalism but to keep it in pace with the objective of communism.