Some of them actually are left wing/progressive, most obviously Bündnis Sahra Wagenknecht. Wagenknecht was actually an MP for The Left, whose politics are what

Some of them actually are left wing/progressive, most obviously Bündnis Sahra Wagenknecht. Wagenknecht was actually an MP for The Left, whose politics are what you'd imagine. The CDU/CSU have spent years in coalition with the German left, also. The list appears to be simply any party that either opposes unlimited immigration, or the author suspects might not be fully in support of it, regardless of their other positions or history.