Yello.

Just been wondering, some recent songs, a lot prevelant in some trap tracks is something like a Metallic-ish sounding lead, very cool sounding.

A track reference would be Rattlesnake by Rogue.

Just wondering yeah, how would one go about creating a sound like this, I mean is it a technique relatable to many synthesizers, or somewhat exclusive to a few synths?

Looking to see how to apply these techniques in both leads and ambient pads and such.
---Any help on this would be greatly appreciated.

Thanks!