The belief that followers of different religions worship the same God under various names and practices is a viewpoint commonly associated with Universalism, particularly within certain interpretations of monotheistic religions. One prominent example is Bahá'í Faith.
Bahá'ís believe in the unity of all religions and the idea that all major world religions stem from the same divine source. They teach that God is a single, universal entity, and that the prophets or manifestations of God (such as Jesus, Muhammad, Moses, and others) brought messages suited to their respective times and cultures.
Additionally, some strands of Unitarian Universalism also embrace a similar perspective, emphasizing a pluralistic approach to spirituality and the belief that many paths lead to the same ultimate truth.
If you have a specific context in mind or need information on a different faith or belief system, feel free to provide more details!