Shun Sacrifices to Shang Ti

Thereafter, he [Shun] sacrificed specially, but with the ordinary forms, to God [Shang Di]; [...]

The Shoo King, The Books of Yu, The Canon of Shun, 3.

(Legge, James, The Chinese Classics, 7 vols, London: Trubner & Co., 1865, vol. 3, pt. 1, pp. 33-34.)

The Supreme Being of the Taino of Hispaniola

They believed in one supreme being, who inhabited the sky, who was immortal, omnipotent, and invisible; to whom they ascribed an origin, who had a mother, but no father. They never addressed their worship directly to him, but employed inferior deities, called Zemes, as messengers and mediators.

Irving, Washington, A History of the Life and Voyages of Christopher Columbus, 4 vols., London: John Murray, 1828, v. 2, pp. 111-112.

An/Anu, Ancient High God of the Sumerian/Akkadian Pantheon

In Sumerian, the word for ‘god,’ dingir, also means, ‘shining,’ ‘bright,’ and the sign used for writing dingir also stands for An, the Sky-god; the word also means ‘high,’ ‘Heaven.’ An is the only Sumerian deity whose ideogram is never preceded by the determinative for ‘god.’ They write dingir Enlil, ‘god Enlil,’ dingir Sin, ‘god Sin,’ etc., but never dingir An. Surely this means that An (Anu) is not only older than other deities, but An was in the beginning ‘god,’ ‘the Sky-god.’ The ideogram for writing ‘god,’ ‘high,’ ‘Heaven,’ ‘bright,’ and for the god An, was the picture of a star. In the minds of the earliest Sumerians dingir Enlil, dingir Enki, etc., really mean An-Enlil, An-Enki, etc.; that is Enlil, Enki, etc., are only easpects of the father Anu. On seals of the pictographic tablets and on painted pots of that prehistoric period, the picture of a star constantly occurs. This star sign is almost the only religious symbol in this primitive age. These facts cannot be explained without assuming monotheism in the beginning.

Langdon, Stephen H., Semitic Mythology,  p. 93.

The Evolution of the Sumerian Pantheon as Evidenced in its Writtings

There is a gradual diminution of the pantheon back through the stages represented by four periods of early writing before 3000 B.C. until at Erech only two deities are found. The Sumerian theologians themselves had two views about the oldest deity from which the whole vast pantheon sprang. The philosophically minded, basing their theory on the well-known Sumerian principle that the whole universe and all things in it were derived from the logos or word of the Water-God, regard the Water-God as the first deity. Another school which probably preserves the true tradition and true fact, always regards the Sky-God as primitive and founder of the pantheon.

Langdon, Stephen H., “Monotheism as the Predecessor of Polytheism  in Sumerian Religion” (pp. 136-46), Evangelical Quarterly, London: James Clarke & Company, vol. 9 (April) 1937, p. 138.