Capcom have released a set of three Monster Hunter: World videos showcasing movesets in each category. Light, Heavy, and Technical weapons all get a trailer apiece, totally fourteen weapons in all.
Each weapon only gets 30 seconds or so, so it’s not absolutely comprehensive or anything. But it’s not a bad overview of the weapons hunters will have available when the game is released. We still don’t exactly know when that is, other than the PC version of Monster Hunter: World will be “later” than the “early 2018” window for console versions.
You can watch each of the videos below. The narrator is really getting into the spirit of things with his delivery.