English-UK Keyboard

No. of keys: 7
The keys:

• BACKSLASH & BAR
• € Euro currency
• ¬ -
• £
• ~ #
• ' @
• "

No. of keys: 5
The keys:

• ¬ -
• £
• ~ #
• ' @
• "

• BACKSLASH & BAR
• € Euro currency

Bug has been reported for the keys that are not working:
Bug: CLOUDSTACK-1960 - Key remapping fails to input the keys \ BAR € of UK Keyboard.

Japanese-106 Keyboard

No. of keys: 17
The keys:

• ¥ | ー
• \ _ ろ
• ~ ^
• [{
• ]}
• ' @
• ; +
• : *
• Caps Lock
• Kanji Key
• Henkan
• Muhenkan
• Hiragana / Katakana
• Numpad *
• Numpad +
• Numpad -
• Numpad /

No. of keys: 12
The keys:

• ~ ^
• [{
• ]}
• ' @
• ; +
• : *
• Caps Lock (for IE)
• Kanji Key (for IE)
• Numpad *
• Numpad +
• Numpad -
• Numpad /

• ¥ | ー
• \ _ ろ
• Caps Lock (for Firefox)
• Kanji Key (for Firefox)
• Henkan
• Muhenkan
• Hiragana / Katakana

Bug: CLOUDSTACK-1986 - Key translation fails for the Japanese keyboard keys ¥_,\ Bar, Muhenkan, Henkan, & Hiragana/Katakana, Kanji Key, & Caps Lock.

Simplified Chinese Keyboard

No. of keys: 0

No. of keys: N.A

0

Simplified Chinese follows EN-US keyboard layout, hence all keys working fine except few combination keys like "Alt+.", "Alt+Space", "Ctrl+Space" for switching IME.
Bug: CLOUDSTACK-1964 - Simplified Chinese – Some combination keys used to switch IME cannot work well.

English-US

No. of keys: 0

No. of keys: 0

0

Found few issues with English US keyboard as well. Those issues are highlighted in the Wiki page, as well as in the bug we've reported.
Bug: CLOUDSTACK-1961 - Common issues found in English OS with EN-US standard Keyboard.