Mixcoatl.

See an image that represents Mixcoatl in the Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood (Eugene, Ore.: Wired Humanities, 2020-present).

a divine force, usually translated as Cloud Serpent; said in the Florentine Codex to be the only divine force worshipped by the Chichimecs (Sahagún); also, a personal name taken by Nahua men
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 34.

Seen as the name of a fifteen-year-old (gender not specified), Miscovatl (i.e. Mixcoatl), in the sixteenth century in what is now the state of Morelos, Mexico. (Cuernavaca region, ca. 1540s)
The Book of Tributes: Early Sixteenth-Century Nahuatl Censuses from Morelos, ed. and transl. S. L. Cline, (Los Angeles: UCLA Latin American Center Publications, 1993), 164–165.

In juh ipan mjtoa, ce iaomjquj, in telpuchtepitzin iaomjqujco mexico, in vexotzincatl itoca Mixcoatl = Thus is it said of one who died in war, a small youth who came to die in war in Mexico. He was an inhabitant of Uexotzinco named Mixcoatl (central Mexico, sixteenth century)
Fr. Bernardino de Sahagún, Florentine Codex: General History of the Things of New Spain; Book 6 -- Rhetoric and Moral Philosophy, No. 14, Part 7, eds. and transl. Arthur J. O. Anderson and Charles E. Dibble (Santa Fe and Salt Lake City: School of American Research and the University of Utah, 1961), 114.

fran^co. mixcoatl (Tepetlaoztoc, sixteenth century)
Barbara J. Williams and H. R. Harvey, The Códice de Santa María Asunción: Facsimile and Commentary: Households and Lands in Sixteenth-Century Tepetlaoztoc (Salt Lake City: University of Utah Press, 1997), 80.

Also a plentiful name in the Matrícula de Huexotzinco.
Visual Lexicon of Aztec Hieroglyphs, ed. Stephanie Wood, https://aztecglyphs.wired-humanities.org

Frances Krug captures four examples of references in the annals of the Tlaxcala-Puebla Valley to a tornado mixpantli that raced across the sky in 1525, 1526, and/or 1544. In one record, tetzauh (from tetzahuatl, a swirling river) seems to be used in a parallel construction. Also, in a fifth entry, instead of mixpantli, the tlacuilos uses mixcoatl. (SW)
Frances Krug, "The Nahuatl Annals of the Tlaxcala-Puebla Region," ch. 5, p. 40, Ph.D. Dissertation draft written in the 1980s, with transcriptions and translations approved by James Lockhart..