Hey. I have a lot of platinum/diamond and even challenger team which my team farmed with that line up :
Top : Leona/Maokai/Volibear + Tryndamere/Lee Sin/ Renekton (Duo top - farm jungle together and fast push top -> gank bot).
Bot : Assassins : Kha'Zix, Diana or Riven - she is good too.
Good luck!