South Korean standard Dubeolsik (two-set type) layout.
Note:

The backslash is replaced with the Won sign or both of them are printed on many South Korean keyboards. The (halfwidth) backslash is replaced with the Won sign in many South Korean encoding systems.
Exception: On the Korean keyboards for Mac because the backslash is printed because it is not replaced with the Won sign in Mac OS.
The vertical bar ен| (Shift+\) is also replaced as the broken bar ¦  on some South Korean keyboards, but the broken bar in Unicode (U+00A6) is not inputted by most of Korean IMEs. The (halfwidth) vertical bar and the broke bar are ambiguous in some character encoding systems such as ASCII and EUC-KR.
The IBM PC compatible / Microsoft Windows keyboards with the 1x \ and Backspace keys, and the J-shaped Enter key are overwhelmingly used in South Korea.
There are two additional keys: 한/영 Han/Yeong (or 한영 HanYeong) and 한자 Hanja (or 漢字 Hanja) keys. They does not exist as independent keys on some keyboards.
Own work
Yes0song