Smallville made Chloe into Oracle... sort of.
Which his interesting because on that show she ended up marrying Oliver.
Resembles and is are two different things.
Barbara Gordon uses the moniker in the same sense Bruce Wayne "would have" in Batman Beyond. It might even be fair to compare her role in Martian Manhunter in JLU (though J'onn was less of a detective and more of a commander where Barbara was more of a detective and well more of a "coordinator").
Mission Ops is really what we're talking about here and Felicity IS developing a knack for it, but clearly Ollie is calling the shots in this season.