The three monotheistic religions (one God) are Judaism, Catholicism and the Muslim religions.
All likenesses basically disappear at that point with the Muslims. The Judaism and Catholicism are much closer.
With all due respect, it means nothing that there are three monotheistic religions. One could say the same about Molech or Baal. If you do not accept Jesus Christ as your Savior asking Him for the forgiveness of your sins, then it simply doesn’t matter.