This is an observation or maybe a mistaken impression. It seems to me that in the ethnic experience of the Swedes that for varied reasons one time Lutherans became Swedish Covenant or Swedish Baptists. It seems in the Norwegian experience there were those who were more Baptist and Covenant than Lutheran but stayed Lutheran in name. Yes, the Evangelical Free Church, I believe, has Lutheran roots, but Norwegians seemed to want to keep the Lutheran name even as they were pretty loose or varied in their theology, piety, and ecclesiology. That seems to account in part for some of us insisting on freedom in terms of the just mentioned three factors within a Lutheran body.
I served a Norwegian and a Swedish congregation in inner city Chicago. The Swedes were used to much more top down ways.