This keyboard layout implements a personal variation of Colemak Mod-DH with M-K switched. One notable change with this layout is space + backspace in line with the homing keys. As such, Lower and Raise have been moved to occupy the middle two keys.
I have been using this layout happily daily now since June 2019.
Colemak Mod-DH
,-----------------------------------------------------------------------------------------------.
| Tab | Q | W | F | P | B | J | L | U | Y | ; | ' |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Func | A | R | S | T | G | M | N | E | I | O | Enter |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Shift | Z | X | C | D | V | K | H | , | . | / | \ |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Ctrl | GUI | Alt | Shift | Space | Lower | Raise | Bkspc | Shift | - | = | Ctrl |
`-----------------------------------------------------------------------------------------------'
Lower
,-----------------------------------------------------------------------------------------------.
| Tab | | { | } | | | ` | 7 | 8 | 9 | 0 | |
|-------+-------+-------+-------+-------+-------+-------+------+-------+-------+--------+-------|
| Func | | ( | ) | | | * | 4 | 5 | 6 | - | Enter |
|-------+-------+-------+-------+-------+-------+-------+------+-------+-------+--------+-------|
| Shift | | [ | ] | | | / | 1 | 2 | 3 | + | = |
|-------+-------+-------+-------+-------+-------+-------+------+-------+-------+--------+-------|
| Ctrl | GUI | Alt | Shift | Space | Lower | Func | Bksp | 0 | . | = | Ctrl |
`-----------------------------------------------------------------------------------------------'
Raise
,-----------------------------------------------------------------------------------------------.
| Tab | | { | } | | | | Pg_Up | Up | Pg_Dn | | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Func | | ( | ) | | | Home | Left | Down | Right | Del | Enter |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Shift | | [ | ] | | | | End | Ins | Caps | | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| Ctrl | GUI | Alt | Shift | Space | Func | Raise | Bkspc | | | | Ctrl |
`-----------------------------------------------------------------------------------------------'
Function
,-----------------------------------------------------------------------------------------------.
| Esc | | Prev | Play | Next | | | F7 | F8 | F9 | F10 | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | Vol- | Vol+ | Mute | | | F4 | F5 | F6 | F11 | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | | | | | | F1 | F2 | F3 | F12 | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | | | | Funct | Funct | | | | | |
`-----------------------------------------------------------------------------------------------'
Debug
,-----------------------------------------------------------------------------------------------.
| Reset | Debug | | | | | | | | | | EEP |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | | | | | | | | | | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | | | | | | | | | | |
|-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------|
| | | | | | | | | | | | |
`-----------------------------------------------------------------------------------------------'