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