There aren't any recent 500cc light twins that are "standard" style. The three Honda 500cc models are all modern styled, but, certainly varying degrees of standard ergos. I'd like to try one, they seem like great bikes.
The Ninja 500, made up through around 2008 or 2009, though fully faired like a sport bike has standard ergos. The Suzuki GS500 is another 500cc twin naked bike with standard ergos.