POET-TREE

        AI     

       POE

      GRAY    

     DANTE  

   HORACE  

  KHAYYAM

   KALIDASA

  SOPHOCLES 

 BAUDELAIRE 

 SHAKESPEARE     

          LI   

         TU   

         SU 

ARISTOPHANES

 What is this curious list?

The answer is, "Poet - tree".

The Poet Tree is composed of poets who not only have names of different lengths but who represent different cultures, namely:
Ai - Japanese,

Poe - American,

Gray - English,

Dante - Italian,

Horace - Roman,

Khayyam - Persian,

Kalidasa - Indian,

Sophocles - Greek,

Baudelaire - French,

Shakespeare - English,

Li - Chinese,

Tu - Chinese,

Su - Chinese,

Aristophanes - Greek

Source: wordsmith.org