The top left (the white one) is the Dumpling Prototype Ardeus included with my order. The Skip (formerly Strider) is the one in the middle of the first two pictures of the throws. It’s the most narrow one.
Here’s the link to Ardeus’ BST where the Specs for each throw are listed…
I only have them since today and although I played them thoroughly throughout the day I honestly can’t say it for sure yet. I’m pretty much overwhelmed by all the goodness. But if I had to choose right now I think I’d lean towards the Skip. I like the narrow profile and the weight and balance just clicked with me instantly judging from the first couple of throws.