Like Forums 4 Swedish, Danish & German emmigrants?

Do any members here know about similar FORUMS for Swedish, Danish &/OR German emigration? In less than 1 day after joining I have incrementally found lots of most probable information about my ancestry and was able to extend it back another 50 or more years, but with leads to many more years of genetic background. Perhaps just one week ago I was under the impression I was 1/2 Swedish, and 1/4 each of German and Norwegian. I am still 1/4 Norwegian, but my understanding of the other 3/4 has become more complex, adding Danish ancestry, which I had guessed at, but probably old American Scots-Irish, not really known much about before. I hope nobody considers this post too OFF TOPIC, because others with Norwegian ancestry might have similar ancestry, and also at this point of less than 24 hour forum membership, I only have the experience of this thread area (by way of self justification!).