Interesting enough (or deja vu), in Spain
Echoing other European far-right parties Vox also appealed to conspiracy theories. For instance, invoking the demonized figure of the Hungarian Jewish philanthropist George Soros, whom they accuse of supporting Catalan separatism and financing irregular immigration in Spain. “There is Soros redoubling his efforts to favor the Islamization of Europe and the chaos in the continent,” wrote Vox President Abascal in a June 2018 tweet, “and President Sanchez is already at his command.”
I'm guessing Orban's blame campaign on Soros is even better known.
On the other hand, on a quick search, I couldn't find any story about Germany's AfD blaming Soros for something, although the Soros-founded Open Society Foundation definitely sees the AfD as a problem, expanding its operations in Germany's east, a stronghold of the AfD nowadays. (Soros himself has commented on the threat that AfD presents but in Bavaria, after the AfD entered parliament there.) So, has the AfD avoided making public comments about Soros (especially the more conspiratorial kind)?