These emojis are made of simple letter o.

Circle Hands Excited
(((o(ﾟ▽ﾟ)o)))o((^▽^))oＯ(≧▽≦)Ｏ
o(〃＾▽＾〃)oo(^▽^)oＯ(≧∇≦)Ｏ
o(≧∇≦o)σ(≧ε≦ｏ)o(^▽^)o
⌒°(❛ᴗ❛)°⌒o(^∀^*)oo(^◇^)o
《《o(≧◇≦)o》》o(*≧□≦)oo(>ω<)o