Sir William, I've seen the 8 in 2 "king's maille" style. It's essentially 4 in 1 style, but using two rings in every spot instead of one. It seems horribly unfit to me, as a hauberk that is 25 pounds normally would be 50 pounds (since you're doubling rings). Better protection at the cost of weight; and quite the cost of weight, I'd say.
I've seen 6 in 1 styles on samurai mail.
However, 8 in 1 is a new one to me. I'm guessing central ring with + and X from it, but I'm thinking it won't lay right... quite curious now.