Here is the source code for keyboard shortcuts with DLC (which only adds shortcuts to Espionage Overview and Religion Overview (in G&K) as you've found). I've modified it for readability. Taken from \Sid Meier's Civilization V\assets\DLC\Expansion2\Gameplay\XML\Units\CIV5Controls.xml as onuryn mentioned. Several do nothing, such as SELECTYUNITTYPE, NEXTUNIT, and PREVUNIT.
<Type>CONTROL_CENTERONSELECTION
<Description>TXT_KEY_ACTION_CENTER_SELECTION
<HotKey>KB_C
<HotKeyAlt>KB_NUMPAD5
<Type>CONTROL_SELECTYUNITTYPE
<Description>TXT_KEY_ACTION_SELECT_UNIT_TYPE
<HotKey>KB_C
<CtrlDown>1
<HotKeyAlt>KB_NUMPAD5
<CtrlDownAlt>1
<Type>CONTROL_SELECTYUNITALL
<Description>TXT_KEY_ACTION_SELECT_UNIT_ALL
<HotKey>KB_C
<AltDown>1
<HotKeyAlt>KB_NUMPAD5
<AltDownAlt>1
<Type>CONTROL_SELECTCITY
<Description>TXT_KEY_ACTION_SELECT_CITY
<HotKey>KB_INSERT
<Type>CONTROL_SELECTCAPITAL
<Description>TXT_KEY_ACTION_SELECT_CAPITAL
<HotKey>KB_F10
<CtrlDown>1
<Type>CONTROL_NEXTCITY
<Description>TXT_KEY_ACTION_NEXT_CITY
<Help>TXT_KEY_ACTION_NEXT_CITY_HELP
<HotKey>KB_HOME
<HotKeyAlt>KB_NUMPADPLUS
<Type>CONTROL_PREVCITY
<Description>TXT_KEY_ACTION_PREVIOUS_CITY
<Help>TXT_KEY_ACTION_PREVIOUS_CITY_HELP
<HotKey>KB_END
<HotKeyAlt>KB_NUMPADMINUS
<Type>CONTROL_NEXTUNIT
<Description>TXT_KEY_ACTION_PREVIOUS_PLOT_UNIT_HELP
<Help>TXT_KEY_ACTION_NEXT_UNIT_HELP
<HotKey>KB_PERIOD
<CtrlDown>1
<HotKeyAlt>KB_NUMPADSTAR
<Type>CONTROL_PREVUNIT
<Description>TXT_KEY_ACTION_PREVIOUS_PLOT_UNIT_HELP
<Help>TXT_KEY_ACTION_PREVIOUS_UNIT_HELP
<HotKey>KB_COMMA
<CtrlDown>1
<HotKeyAlt>KB_NUMPADSLASH
<Type>CONTROL_CYCLEUNIT
<Description>TXT_KEY_ACTION_CYCLE_UNITS
<Help>TXT_KEY_ACTION_CYCLE_UNITS_HELP
<HotKey>KB_W
<HotKeyAlt>KB_NUMPADENTER
<Type>CONTROL_CYCLEUNIT_ALT
<Description>TXT_KEY_ACTION_CYCLE_UNITS_ALT
<Help>TXT_KEY_ACTION_CYCLE_UNITS_ALT_HELP
<HotKey>KB_PERIOD
<HotKeyAlt>KB_NUMPAD5
<Type>CONTROL_CYCLEWORKER
<Description>TXT_KEY_ACTION_CYCLE_WORKERS
<Help>TXT_KEY_ACTION_CYCLE_WORKERS_HELP
<HotKey>KB_SLASH
<Type>CONTROL_LASTUNIT
<Description>TXT_KEY_ACTION_LASTUNIT
<Help>TXT_KEY_ACTION_LASTUNIT_HELP
<HotKey>KB_COMMA
<Type>CONTROL_ENDTURN
<Description>TXT_KEY_ACTION_ENDTURN
<Help>TXT_KEY_ACTION_ENDTURN_HELP
<HotKey>KB_RETURN
<HotKeyPriority>1</HotKeyPriority>
<HotKeyAlt>KB_NUMPADENTER
<HotKeyPriorityAlt>1</HotKeyPriorityAlt>
<Type>CONTROL_ENDTURN_ALT
<Description>TXT_KEY_ACTION_ENDTURN_ALT
<Help>TXT_KEY_ACTION_ENDTURN_ALT_HELP
<HotKey>KB_SPACE
<CtrlDown>1
<Type>CONTROL_FORCEENDTURN
<Description>TXT_KEY_ACTION_FORCE_ENDTURN
<Help>TXT_KEY_ACTION_FORCE_ENDTURN_HELP
<HotKey>KB_RETURN
<ShiftDown>1</ShiftDown>
<HotKeyAlt>KB_NUMPADENTER
<ShiftDownAlt>1</ShiftDownAlt>
<Type>CONTROL_AUTOMOVES
<Description>TXT_KEY_ACTION_AUTOMOVES
<Help>TXT_KEY_ACTION_AUTOMOVES_HELP
<HotKey>KB_A
<CtrlDown>1
<Type>CONTROL_PING
<Description>TXT_KEY_ACTION_PING
<Help>TXT_KEY_ACTION_PING_HELP
<Type>CONTROL_YIELDS
<Description>TXT_KEY_ACTION_YIELDS
<Help>TXT_KEY_ACTION_YIELDS_HELP
<HotKey>KB_Y
<Type>CONTROL_RESOURCE_ALL
<Description>TXT_KEY_ACTION_RESOURCE_ALL
<Help>TXT_KEY_GLOBELAYER_RESOURCES
<HotKey>KB_R
<CtrlDown>1
<Type>CONTROL_UNIT_ICONS
<Description>TXT_KEY_ACTION_UNIT_ICONS
<Help>TXT_KEY_GLOBELAYER_UNITS
<HotKey>KB_U
<AltDown>1
<Type>CONTROL_SCORES
<Description>TXT_KEY_ACTION_SCORES
<Help>TXT_KEY_ACTION_SCORES_HELP
<Type>CONTROL_LOAD_GAME
<Description>TXT_KEY_ACTION_LOAD_GAME
<Help>TXT_KEY_ACTION_LOAD_GAME_HELP
<HotKey>KB_L
<CtrlDown>1
<Type>CONTROL_OPTIONS_SCREEN
<Description>TXT_KEY_ACTION_OPTIONS_SCREEN
<Help>TXT_KEY_ACTION_OPTIONS_SCREEN_HELP
<HotKey>KB_O
<CtrlDown>1
<Type>CONTROL_RETIRE
<Description>TXT_KEY_ACTION_RETIRE
<Help>TXT_KEY_ACTION_RETIRE_HELP
<HotKey>KB_Q
<AltDown>1
<Type>CONTROL_SAVE_GROUP
<Description>TXT_KEY_ACTION_SAVE_GROUP
<Help>TXT_KEY_ACTION_SAVE_GROUP_HELP
<HotKey>KB_S
<AltDown>1
<CtrlDown>1
<Type>CONTROL_SAVE_NORMAL
<Description>TXT_KEY_ACTION_SAVE_NORMAL
<Help>TXT_KEY_ACTION_SAVE_GAME_HELP
<HotKey>KB_S
<CtrlDown>1
<Type>CONTROL_QUICK_SAVE
<Description>TXT_KEY_ACTION_QUICK_SAVE
<HotKey>KB_F11
<Type>CONTROL_QUICK_LOAD
<Description>TXT_KEY_ACTION_QUICK_LOAD
<HotKey>KB_F11
<CtrlDown>1
<Type>CONTROL_CIVILOPEDIA
<HotKey>KB_F1
<Type>CONTROL_POLICIES_SCREEN
<Description>TXT_KEY_ACTION_SHOW_POLICIES_SCREEN
<HotKey>KB_F5
<Type>CONTROL_FOREIGN_SCREEN
<Description>TXT_KEY_FOREIGN_ADVISOR_TITLE
<HotKey>KB_F4
<Type>CONTROL_MILITARY_SCREEN
<Description>TXT_KEY_MILITARY_ADVISOR_TITLE
<HotKey>KB_F3
<Type>CONTROL_TECH_CHOOSER
<Description>TXT_KEY_TECH_CHOOSER_TITLE
<HotKey>KB_F6
<Type>CONTROL_TURN_LOG
<Description>TXT_KEY_EVENT_LOG
<HotKey>KB_F7
<Type>CONTROL_DOMESTIC_SCREEN
<Description>TXT_KEY_DOMESTIC_ADVISOR_TITLE
<HotKey>KB_F2
<Type>CONTROL_VICTORY_SCREEN
<Description>TXT_KEY_VICTORY_SCREEN_TITLE
<HotKey>KB_F8
<Type>CONTROL_INFO
<Description>TXT_KEY_INFO_SCREEN
<HotKey>KB_F9
<Type>CONTROL_SELECT_HEALTHY
<Description>TXT_KEY_MAIN_MENU_HALL_OF_FAME
<HotKey>KB_H
<CtrlDown>1
<Type>CONTROL_TOGGLE_STRATEGIC_VIEW
<Description>TXT_KEY_POP_STRATEGIC_VIEW
<HotKey>KB_F10
<Type>CONTROL_ADVISOR_COUNSEL
<Description>TXT_KEY_ADVISOR_COUNSEL_TITLE
<HotKey>KB_V
<Type>CONTROL_ESPIONAGE_OVERVIEW
<Description>TXT_KEY_EO_TITLE
<HotKey>KB_E
<CtrlDown>1
<Type>CONTROL_RELIGION_OVERVIEW
<Description>TXT_KEY_RELIGION_OVERVIEW
<HotKey>KB_P
<CtrlDown>1