The right space bar key has been changed to backspace, as I only hit space with my left thumb
Backtick is at the lower right and also serves goes to the 3rd function layer when held
Enter key acts as shift when held
Escape key acts as control when held
Minus key at upper right
Lower layer
Numbers are on the lower layer, to make it easier to use a numpad on the right hand
Arrow keys
Straight and curly brackets in the middle two columns
Screenshot keys for MacOS
Upper layer
Symbols are on the upper layer
Media keys
Page Up/Down, Home/End
3rd function layer
Function keys
Layouts
Qwerty
,----+----+----+----+----+----. ,----+----+----+----+----+----.
TAB , Q , W , E , R , T , Y , U , I , O , P ,MINS,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X0 , A , S , D , F , G , H , J , K , L ,SCLN,QUOT,
|----+----+----+----+----+----| |----+----+----+----+----+----|
LSFT, Z , X , C , V , B , N , M ,COMM,DOT ,SLSH, X4 ,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X3 ,LCTL,LALT,LGUI, X1 ,SPC , BSPC, X2 ,LEFT,DOWN, UP ,RGHT
`----+----+----+----+----+----' `----+----+----+----+----+----'
Colemak
,----+----+----+----+----+----. ,----+----+----+----+----+----.
TAB , Q , W , F , P , G , J , L , U , Y ,SCLN,MINS,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X0 , A , R , S , T , D , H , N , E , I , O ,QUOT,
|----+----+----+----+----+----| |----+----+----+----+----+----|
LSFT, Z , X , C , V , B , K , M ,COMM,DOT ,SLSH, X4 ,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X3 ,LCTL,LALT,LGUI, X1 ,SPC , BSPC, X2 ,LEFT,DOWN, UP ,RGHT
`----+----+----+----+----+----' `----+----+----+----+----+----'
Dvorak
,----+----+----+----+----+----. ,----+----+----+----+----+----.
TAB ,QUOT,COMM,DOT , P , Y , F , G , C , R , L ,MINS,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X0 , A , O , E , U , I , D , H , R , N , S ,SLSH,
|----+----+----+----+----+----| |----+----+----+----+----+----|
LSFT,SCLN, Q , J , K , X , B , M , W , V , Z , X4 ,
|----+----+----+----+----+----| |----+----+----+----+----+----|
X3 ,LCTL,LALT,LGUI, X1 ,SPC , BSPC, X2 ,LEFT,DOWN, UP ,RGHT
`----+----+----+----+----+----' `----+----+----+----+----+----'