Even then, I'd think Islam would reference a prophet of God or of Allah, vice a prophet of Abraham. In most if not all religions branching from Judeo-Christian-Islamic traditions, Abraham would be considered a prophet of God, and it would seem odd for Abraham referenced as having his own prophet. I'm wondering if a wire didn't get crossed somewhere.

LDS.org should be able to answer most if not all Qs on LDS doctrine. I am always happy to answer Qs posed of my faith, but what's on that site is official doctrine.