Your post shows that you already went there, you took a stand and posted on Mormonism being a Christian denomination when it is widely known that Mormonism is an anti-Christian cult, and what the Catholic church, and other Christian churches define as a different religion from Christianity.
They consider themselves to be Christian. Other Christians don’t. I’ll let the 2 groups duke out their theological differences for themselves. It’s not really my call to determine that Mormons are Christians or not since I am not an expert in Christianity. But they do have common values with other Judeo-Christian religions and that’s what I’m focusing on.