I have no idea where you're getting this notion that Pantheism is "just another Christian doctrine". Based on the Wikipedia article, I'd say that Pantheism actually has more in common with some non Christian religions:
**
Comparison with non-Christian religions
Some 19th-century theologians thought that various pre-Christian religions and philosophies were pantheistic. They thought Pantheism was similar to the ancient Hinduism[19]: pp. 618 philosophy of
Advaita (non-dualism).[58]
19th-century European theologians also considered
Ancient Egyptian religion to contain pantheistic elements and pointed to Egyptian philosophy as a source of Greek Pantheism.[19]: pp. 618–620 The latter included some of the
Presocratics, such as
Heraclitus and
Anaximander.[59] The
Stoics were pantheists, beginning with
Zeno of Citium and culminating in the emperor-philosopher
Marcus Aurelius. During the pre-Christian Roman Empire,
Stoicism was one of the three dominant schools of philosophy, along with
Epicureanism and
Neoplatonism.[60][61] The early
Taoism of
Laozi and
Zhuangzi is also sometimes considered pantheistic, although it could be more similar to
Panentheism.[49]
Cheondoism, which arose in the
Joseon Dynasty of Korea, and
Won Buddhism are also considered pantheistic. The
Realist Society of Canada believes that the
consciousness of the self-aware universe is reality, which is an alternative view of Pantheism.[62]
**
Source:
en.wikipedia.org