Ask HN: Looking for the name of a particular keyboard layout/formfactor

This is kind of a dumb question, but I'd appreciate it if someone could fill me in here...

Is there a particular name for the way keyboards like these are laid out?

http://www.agamazone.com/products_k_k330.html http://www.agamazone.com/products_k_k220.html

The thing to notice is that the navigation keys are laid out vertically instead of horizontally, shortening the distance between the numpad and the enter key.

I'm looking at getting a new keyboard, but most of the ones I find have the navigation keys laid out horizontally, increasing the space. Because of how I like to set my keyboard up for certain tasks (particularly gaming), having the enter key closer to the numpad (discounting the fact that numpads come with an enter key on them) reduces stress on my finger joints.

The keyboard I currently have is manufactured by the same people who make the keyboard I linked to, but in my experience the quality of the keyboard is very suspect, thus why I'm looking to replace it with a similar layout from a more reliable manufacturer. I'm not trying to plug them in any way, those are just the only keyboards I can find with this particular layout at the moment.

Thanks for any help in advance