How the string is made and how the bow is tuned will usually make a lot more difference than the material it's made from.
I shot 14 strands of Dynaflight '97 for years and got lots of comments on how quiet my bow was, and had lots of customers tell me how quiet their bows were with the same. My draw weight was 66#@30.5".
Padded loop Flemish strings are generally quieter. Moderate strand counts work best for me--for your bow I'd go with 12 strands, loops padded to 18 if using Dynaflight '97.
My favorite material right now is 8190. 18 strands with 22 in the loops for most bows--still a pretty small diameter string because the strands are so small.
Nock fit is important--too tight adds noise and can cause tuning problems.
Your release matters--the better it is, the quieter.
If your arrows aren't matched to your bow, they can add noise.
Is the bow tillered for your release? I.E., in your pic you are shooting 3-under--is the bow tillered for 3-under? That can make a difference in noise.
Silencer type and placement will affect noise. I like cat whiskers, tied on around the string so they can be tuned, and cut short into little balls. Left too long, they can make their own little slapping noise.
I start with a "naked" string. Find the sweet spot in the brace height, where you get the least noise and vibration.
Add silencers, and move them around. You'll find there is a sweet spot for them as well. Be sure they are put on correctly, and you don't use too much--too much of some materials can be noisy.
There is no "magic" string material, any more than there is a magic bow or arrow or broadhead. Sometimes it just takes some extra tinkering. I've never had to go to extremes to get a bow quiet.