Currently all establishment parties (CDU, SPD, FDP, Grüne) in Germany are neoliberal, right wing and rabidly pro-war, pro-NATO and pro-EU. AfD are neoliberal but euroskeptic with some anti-establishment rhetoric. You can call them fascist if you want but there is very little difference between them and the establishment parties. AfD are more explicitly islamophobic and anti-immigration but the mainstream parties have basically adopted most of their views. And where the AfD does apologetics for German Nazis, the mainstream parties do the same for Ukrainian Nazis. For me they are all fascist.

BSW are social democrats with some reactionary social views. They are anti-NATO, anti-war and moderately anti-EU. As a result they are demonized by the liberal mainstream to an absurd degree, more even than AfD. But really they are more or less what Die Linke used to be before Die Linke went neoliberal and joined the establishment and as a result lost most of their base and tanked in the elections. DKP are progressive MLs and principled anti-imperialists, there’s nothing “nazbol” about them. They’re your best option if you want to join a communist party in Germany. SGP are Trots and too tiny to be relevant. MLPD is probably an op, but either way it’s just a couple of old, out of touch boomers, also irrelevant. KPD hasn’t existed since like the 50s.