Imperial Federation of Mexico

The Lesser Coat of Arms of the Imperial Federation of Mexico depicts the imperial eagle, perched on a cactus in Lake Texcoco (as it do), with the addition of the Order of Our Lady of Guadalupe around the central escutcheon, and the arms of eight various consitutent peoples/territories of the Federation on the wings.

Left, clockwise from top: Yoreme (Mayo), Hñähñü (Otomi), Mixe, Yoeme (Yaqui)
Right, clockwise from top: O'odham, Purépecha (Tarascans), Ekab Maya, Mexica Nahua (Aztecs)
Center: Combined escutcheon of the Imperial House of Götzen-Itúrbide, inescutcheon of the Xicalcoliuhqui (aka the "stepped fret"), a common motif in Mesoamerican art.

Credits: Elements taken from wikimedia commons (Ludovicus Ferdinandus, Marrovi, and AldoEZ)

(... I was going to do a Greater version, but the lag was immense XD )