Who do you think could be Anokata? (Gosho has already confirmed that the person and the full name have already appereared in the manga!!!! And that it isn't Agasa, Yusaku Kudo or James Black) There must be a possibility to figure it out....!!!!
I've heard from a few fans on a detective conan forum that Anokata could be one of the horseback riders from Kogoro's horseracing program, since the Detective Conan series was originally only supposed to run a few months. However, this is just speculation coming from fans, so it is not certain that it is so.
I have my own speculations as to who RUM might be, but since this topic isn't really directed towards RUM, I'll share my thoughts about this on a more relevant topic.
Vermouth has the same characteristic with moriarti. She acts like a servant rather than the boss, doesn't wanna kill the biggest threat cause she's getting entertained (just my theory)