They’re not grouped like that. Sorry if I explained poorly. The game has categories of languages and then sub-categories within those. Germanic is a top-level category. It includes the sub-categories German, Frisian, English, and Scandinavian. Dutch, Low German, and the others in that first list go in the German sub-category. Frisian is in the Frisian sub-category, English is in English, and Swedish is in Scandinavian