The ones posted above appear to be shorter in length. What you are requesting is less angle. You simply need an adjustable lever, like Pazzos or CRGs.

There are even eBay versions, and some stock levers have adjustability. Do you have a wheel on top of your lever? If so, you can adjust your stock lever to be in closer to the grip.

Pazzo - Pazzo Racing - Performance Sportbike Custom Levers
CRG - CRG - Constructors Racing Group

I've had both. Currently running CRG.