Forgive me, I know little about crypto, and am bearish on it, but:
My understanding is that Ripple was very much meant to be a currency/commodity, unambiguously, where most other crypto backed by whitepapers were meant to be securities on the basis that they were meant to back some hare-brained scheme or have some utility beyond simply being a means of transfer. If I'm right about that, then surely Ripple has one of the strongest arguments for not being a security?