Correct Job Department

Can anyone give advice / reason on the following :-

Example :- Job description - Story Editor

As at 27JUL2022 I find as follows :-

Editorial Department - 944

Editors - 35

Script and Continuity Department - 1733

Writers - 40

Additional Crew - 41033

So this is the deal - which department is ACTUALLY the correct one in terms of IMDB requirements ?. I can understand anything with story and editor ending up in a script, editing or writing department, and yet the majority are in Additional Crew ? Is this correct ? Are story editors so little thought of, that they are lumped into the biggest department ?  Is there a search engine anywhere on IMDB where one can go and type in - say - media coordinator and get the correct department?