It seems there are a number of keyboard layouts available. I started with the standard 'qwerty' in school. In University, I programmed a mainframe's terminal keyboard to use Dvorak. But keyboards with a native Dvorak are not easily obtainable (zero effort wise). I have defaulted to using qwerty for now.
Today I encountered the Workman Keyboard Layout, as described by OJ Bucao, September 6, 2010, which is said to have further improvements over the Dvorak layout.
A layout needs the mechanical bits. 68 keys provides all the designs to build one's own keyboard from the ground up.
For pre-assembled keyboards, Mechanical Keyboards seems to be the place to be. Some keyboards have Workman as a built-in selection.
And so that I may remind myself of a previous entry which is tangentially relevant: i3 Window Manager and a Kinesis Keyboard
2018/09/16 - HN discussion on the Ultimate Hacking Keyboard (missing an ESC key).
2019/02/18 - HN discussion on Dvorak. Now if there was a Microsoft Ergonomic Keyboard 4000 with a Dvorak layout, I would give that a try. Well, Linux: How to Switch to Dvorak Keyboard Layout shows how to switch the keyboard layout in LXDE. Just need to print out the layout diagram and I'm all set. Just flying a little blind (can't look at the keyboard). As a reminder, shift-caps-lock switches layouts.