I don't agree with the list either. The Suzuki TU250 is a great choice. How about the Suzuki GZ250?? Kawasaki Vulcan 500=good choice. The 500cc water cooled vertical twin engine is the same as the 500 Nnja, only with less power on top and more mid range.This is a potent little motor, but can easily be ridden sedately without getting away from a newbie. Honda CRF230M is a good choice, though the dual sport model would be more versatile, and off road is the best way to start out and learn how to handle a motorcyle. That's how I started some 48 years ago and it has served me well.BMW F650 GS=bad choice.This is the new water cooled vertical twin engine also used in the F800 GS and F800 GT and F800S (discontinued). A little too much for a newbie in both weight and power.Pretty expensive for a bike that most likely will be dropped. Suzuki GS500F. I'm mixed about this one. The 500cc air cooled vertical twin, like the Vulcan 500, can be easily ridden sedately, but has enough power on top to entertain a more experienced rider.My problem is all the expensive fairing parts that will most likely be dropped and broken. A used naked model would be way better.Monster 696. Too expensive for a beginner. Few riders will adjust the desmodromic valves as they are a bitch. A smaller cheaper bike would be better.Yamaha FZ6R-too much expensive body work to get broken in a drop. Sportster-since when is an 883cc motorcycle a beginners bike? I have an XL883, and it's not so much the power as the weight and size of the bike. When I started riding an 883 was a big bike.Triumph Bonnie-same as the Sporty.Too big and heavy and expensive.Ninja 500.I had one. Great bike, but a beginner would be smart to get a naked motorcycle to start with. This 500 Ninja engine is a great one. Reliable as hell;fast when you wind it up;mine averaged 66 mpg too.
Starter bikes, in my opinion, would be something like the Yamaha XT225,XT250,Suzuki TU250,GZ250,naked GS500, possibly S40,Honda 250 Rebel,250 Nighthawk,one of the older Honda 350-400 twins,Kawasaki Vulcan 500,KLR250.
I started on an old Trail 90, then a Scrambler 90 and on and on.Many were dual sports.The best way to learn how to handle a bike in an endless variety of conditions is off road. I'd rather drop a motorcycle in the dirt than on blacktop where you may also get run over. And why not a Royal Enfield?
Just my opinions.