The definition of Rhetoric:
language that is intended to influence people and that may not be
honest or reasonable.
In your first sentence, It means beyond what is said about it. Suppose you saw an advertisement of a series and decided to watch it. After watching it, you thought that it was better than what was said about it in the advertisement. Now, your friend who has seen the advertisement asked you about the show and you told him it was beyond the Rhetoric, meaning it is better than what is generally perceived about it.
In the second sentence, it means Kenya should do more than just vocally condemning corruption.
The third sentence means something like, Such transition teams will do more than what is said about them (by people) in hastags.