Maximilian
Energetic proclaimer of Jehovah God's Kingdom.
You are no more a valid judge of who and who is not a Christian than I am and this is simply a diversion from the topic. Usually people that try to change the topic have lost the debate.
With the code of conduct he supplied his loyal ones, Christ drew a bright line and then announced that absolutely everyone on the other side is not a Christian.
So wholly devoted to this code would these be that all non-Christian world-views/conduct would be effortlessly recognized. (Malachi 3:18 cf. Titus 1:16)
These preach the gospel, and if necessary, use words.
Meaning that, just as we are able to distinguish genuine legal tender apart from Monopoly money, any sincere person can make a distinction between a Christian and an Anti-Christian (Satanist).
You aren’t the arbiter of who’s a Christian or not. So if those of any Christian sect are sedulous disciples of Christ then Muhammad was Jewish . . .