Who Will Kill Cersei Lannister? - The Top 5 Most Likely Valonqar

Cersei Lannister had her fortune told as a child and ever since she has lived in fear of The Valonqar who was foretold to be the one who will kill her. We have seen the other details of the prophecy coming true throughout the books and it seems that one day the Valonqar will come for Cersei. But who is the valonqar? Is Cersei right about who she thinks it is? I will cover the evidence and then list the most likely options as I see them and explain why. Let me know if you agree or there is another option I have missed.