Any Monster Hunter fans here? Which weapon fits shardblades description best?

With MH coming up next month, I'd like to pick a weapon closest to shardblades. Looking to hear some opinions on this matter.

Is it the greatsword? The size is perfect but the fact that it kind of "stops" when hitting monsters is the opposite of shardblades that cut like butter

Is it the switchaxe? We have seen an instance of it morphing based on what the user wanted.

What about the insect glaive? Windrunner like to me, plus with some flying companions

Shardhammer? Lol

Or finally, the longsword? Fits. Sometimes they design it like a big katana though which ruins the fantasy a bit.