How to write "Some more prominent figures who have led the protests are ..." In Mandarin as used in Taiwan, how to say 


  Some more prominent figures who have led the protests are ...
“領導這次抗議活動的傑出知名人物還有：”


還有 implies 'besides' to interpret 'some more';

prominent figures: 傑出(知名)人物; I think putting 知名 here is ok, because prominent figures are often well-known persons. You can remove it based on your considerations. 

who have led the protests: 領導這次抗議活動的