Which is the best practice to calculate a negative match with a second list (Black-List, Robinson list)?

FuzzyDupes offers several approaches. Create a new project to your database. Perform a search for duplicates in order to find favorable parameters and thresholds for your data. Then select menu Duplicate search->Fuzzy Import with the output option Duplicates only. This result is in a grouped view and allows you to manually review the found matches. Remove false positive items with the context menu (right mouse button). The result from the option Duplicates only allowes in the next step a positive or negative match against the first data table.