Think about characters that the show tends to portray as innocent and chill but still 100% know Conan is Not who he pretends to be. Jodie should by now at least strongly suspect Conan is Shinichi. We have seen she's not a bad detective (in figuring out Akai faked his death), she knows Vermouth has stayed young for 20+ years and she heard her talking to Haibara at the docks, so she could probably do some research and put two and two together. Like by now she should know. Maybe she's just not addressing it to protect him?

And then there's Takagi. He doesn't have half the information Jodie does, but come on. After the "who are you" scene in the elevator???? Being answered he'll tell him in the afterlife and ending up not getting a reply???? And then moving on like nothing happened???? Like you gotta admit. Something weird must've happened inside his brain. How do you even justify that. "Maybe he's the spirit protector of cops incarnate I'd better do as he says and act natural lest he casts a Curse upon me" or some shit similar. Surely not Shinichi Kudo shrunk by a criminal organisation that would be too weird.