>>13910510That is just paternal haplogroup. Y chromosome is passed virtually unchanged from father to son and mutations are rare, so its a method used to track human migrations if you know the origin of the group or its subclades.
You can have a majority autosomal Japanese man with I2 paternal group, so take it with a grain of salt for modern mass migration and intermingling populations.
Some groups also have subclades which are independent to other regions, such as the Ev13 variant of E1b1b which exclusively in Europe and origin in Europe predates R1b.
So yes, you can have higher autosomal correlation between Germany and Sweden, but the Y chromosome branch of Germany matches that most western Europe
