Ka and Ba have no place in LDS theology but card has done great work tying together Egyptian and other theologies.
The LDS concept of a preexistence, and "This One" (Jehovah/Jesus) are very clear references. And the references to the New Testament are common to all Christian theology, including LDS.
The idea of Satan and his devils as weaker than us, but prevailing through experience and deception, fits LDS theology and also other Christian views, e.g. the Screwtape letters.