Additionally, you can easily have seats shaved down and lowering links added to the rear suspension. My brother-in-law was able to drop his Triumph Tiger by 6" at the seat height. Agree the new Rebel is a great starting point.
There's also the Yamaha TW200 or Suzuki VanVan 200 to consider. Talk about fun retro rides.
-Marc Marquez is the greatest!-