Islam is a provable counterfeit religion, it is the product of one man, Mohammed a pagan Arabian, who just used everything familiar to him and encompassed it all into his new invented faith he called Islam, meaning submission.
Mohammed would be familiar with many religions, such as Judaism, Christianity and Zoroastrianism, as there were many of these tribes living throughout Arabia at the time he lived.
Mohammed would eventually plagiarise these faiths, and use parts of them to authentic his own, which is why Muslims have e.g. the same dietary rulesas Jews as well as the obligatory circumcism for all Muslim males. However, circumcism is also performed on women in Islam, as it was an already pre Islamic cultural practice, Mohammed just legitimised it for Islam.
All religious rites and rituals in Islam are taken from pre Islamic pagan practice named as Ramadan, fasting between the ninth Lunar calendar month.
religionresearchinstitute.org/ramadan/roots.htm
The belief that there was only one god, was not new to Mohammed, his own pagan god Hubal,known as Allah or “the god” (Al Ilah,) was known as the “greatest creator” god of the Kaaba,which he elevated to be the only god, causing problems with his tribe the Quraish,as they were the stewards of the Kaaba.By proclaiming there to be only one god, the revenue taken from pilgrims rapidly decreased, which did not make Mohammed popular with his peers.
answering-islam.org/autho…ic_allah2.html
It can be clearly deduced that Islam can be classified as an imitation of Christianity and Judaism, but it has other influences too.