Corto Maltese isn’t even Bande Desinee, it’s not even meant to be humorous. It’s only similar to Asterix in being a European comic. For something similar but less politically awful, you could go for Melusine (A gag comic about a university student witch) or Spirou & Fantasio (An adventure comic that avoids some of the racism by just being set in fantastical places and with spy plots)