I've always wanted to try the olaf swim thongs but I like having a drawstring and they haven't done one with a drawstring in a while that I have seen.
I have the ergowear swim thong in blue, pink and black and love them. It does have a little bit of a bulge but not too much in my opinion.
https://www.ergowear.com/x4d-swim-thong-royal-blue/Also tried the Andrew Christian Swim Thong this summer and it is one of the most comfortable thongs I own in general. I believe it is completely sold out but if you can find one, I suggest grabbing it. They made it in black and pink. The pink can be a little sheer when wet.
https://www.andrewchristian.com/ultra-swim-thong.htmlAs for the Gregg Homme swim thong, I have the sea reef. This model ran a little small and pouch is snug if that is what you are looking for.
I do want to try the Charlie swim thong but the pricing is pretty high. I have heard they are amazing, so next summer I may have to give them a go.