This is the traditional Christian definition of God:
Trinity, in Christian doctrine, the unity of Father, Son, and Holy Spirit as three persons in one Godhead.
I was on another thread where someone had posted the Mormon description of God and was trying to discredit Mormons as Christians with it. But, Mormons believe in the same three members of the Godhead as is described in Christian doctrine! How can you say it is “so fundamentally different?”
Ask 100 random Christian individuals to explain the Trinity beyond the listed definition above and you will get many different explanations. Why single out the one church for being different or non-Christian? Based on their clear explanation of the Godhead, Mormons would likely have conformity when asked to explain God/Trinity beyond the traditional Christian definition.