Question: A maya snake deity that is closely related to a deity whose name means feathered serpent, is also closely related to what other deity?

Context paragraphs:
Ranganatha: Ranganāthar (Sanskrit : रङ्गनाथ) also known as Sri Ranganatha, Aranganathar, Ranga and Thenarangathan is a Hindu deity, more well known in South India, and the chief deity of the Sri Ranganathaswamy Temple, Srirangam.  The deity is a resting form of Lord Vishnu, recumbent on the great form of the serpent god Adisesha, one of the foremost of Hindu Gods.  His consort is Goddess Lakshmi, also known as Ranganayaki .  His two other consorts seen next to his recumbent figure are Bhudevi and Nila Devi.  Most of the deities portray a 'smiling' lord in a reclining position over the celestial serpent Adisesha in the sea of cosmic dissolution (pralaya).  This is the form in which he is open to listening to all of his devotee's woes, and blesses them.  Apart from being worshipped by all Hindus, this form is of particular importance to the Sri Vaishnava community.  His name in Tamil means "leader of the place of assembly", coined from two Tamil words 'Arangam' and 'Nathan'.  This temple is of particular interest for scholars in the south because of the vast history attached to it in shaping the religion in the south.  However, the lack of proper mention about this temple or Lord Vishnu as "resting on a bed of snake in an ocean of milk" in the "Puranas", the Vishnu Sahasranama or other Sanskrit texts pertaining to North India makes it a center of lesser importance in the north.

Kukulkan: Kukulkan (/kuːkuːlˈkän/ ) (""Plumed Serpent"", ""Feathered Serpent"") is the name of a Maya snake deity that also serves to designate historical persons.  The depiction of the Feathered Serpent is present in other cultures of Mesoamerica.  Kukulkan is closely related to the deity Q'uq'umatz of the K'iche' people and to Quetzalcoatl of Aztec mythology.  Little is known of the mythology of this Pre-Columbian era deity.

Yopaat: Yopaat was an important Maya storm god in the southern Maya area that included the cities of Copán and Quiriguá during the Classic period of Mesoamerican chronology (c. 250–900 AD).  Yopaat was closely related to Chaac, the Maya rain god.  Yopaat is depicted as bearing a flint weapon that represents a thunderbolt.  Yopaat was held responsible for especially violent lightning storms, that were believed to cause earthquakes.  He was often represented with a snake in place of one leg, demonstrating a close relationship with K'awiil, another Maya deity with similar attributes.

Parque Kukulcán Alamo: Parque Kukulcán Alamo (Kukulcán Alamo Park) is a stadium located in the city of Mérida, Yucatán, Mexico.  It is primarily used for baseball, and is the home field of the Leones de Yucatán (Yucatán Lions) Mexican League baseball team.  It holds 16,000 people and was opened in 1982.  The stadium is named for Kukulkán, the Maya feathered serpent deity.

Temple of the Feathered Serpent, Teotihuacan: The Temple of the Feathered Serpent is the modern-day name for the third largest pyramid at Teotihuacan, a pre-Columbian site in central Mexico (the term Teotihuacan (or Teotihuacano) is also used for the whole civilization and cultural complex associated with the site).  This structure is notable partly due to the discovery in the 1980s of more than a hundred possibly sacrificial victims found buried beneath the structure.  The burials, like the structure, are dated to between 150 and 200 CE.  The pyramid takes its name from representations of the Mesoamerican "feathered serpent" deity which covered its sides.  These are some of the earliest-known representations of the feathered serpent, often identified with the much-later Aztec god Quetzalcoatl.  The structure is also known as the Temple of Quetzalcoatl, and the Feathered Serpent Pyramid.

Q'uq'umatz: Q'uq'umatz (] ) (alternatively Qucumatz, Gukumatz, Gucumatz, Gugumatz, Kucumatz etc.) was a deity of the Postclassic K'iche' Maya.  Q'uq'umatz was the Feathered Serpent divinity of the "Popol Vuh" who created humanity together with the god Tepeu.  Q'uq'umatz is considered to be the rough equivalent of the Aztec god Quetzalcoatl, and also of Kukulkan of the Yucatec Maya tradition.  It is likely that the feathered serpent deity was borrowed from one of these two peoples and blended with other deities to provide the god Q'uq'umatz that the K'iche' worshipped.  Q'uq'umatz may have had his origin in the Valley of Mexico; some scholars have equated the deity with the Aztec deity Ehecatl-Quetzalcoatl, who was also a creator god.  Q'uq'umatz may originally have been the same god as Tohil, the K'iche' sun god who also had attributes of the feathered serpent, but they later diverged and each deity came to have a separate priesthood.

Awanyu: Awanyu (also Avanyu), is a Tewa deity, the guardian of water.  Represented as a horned or plumed serpent with curves suggestive of flowing water or the zig-zag of lightning, Awanyu appears on the walls of caves located high above canyon rivers in New Mexico and Arizona.  Awanyu may be related to the feathered serpent of Mesoamerica— Quetzalcoatl and related deities.  Awanyu is a frequent motif on Native American pottery of the Southwestern United States.

Ehecatl: Ehecatl (,    ) is a pre-Columbian deity associated with the wind, who features in Aztec mythology and the mythologies of other cultures from the central Mexico region of Mesoamerica.  He is most usually interpreted as the aspect of the Feathered Serpent deity (Quetzalcoatl in Aztec and other Nahua cultures) as a god of wind, and is therefore also known as Ehecatl-Quetzalcoatl.  Ehecatl also figures prominently as one of the creator gods and culture heroes in the mythical creation accounts documented for pre-Columbian central Mexican cultures.

Feathered Serpent: The Feathered Serpent was a prominent supernatural entity or deity, found in many Mesoamerican religions.  It was called Quetzalcoatl among the Aztecs, Kukulkan among the Yucatec Maya, and Q'uq'umatz and Tohil among the K'iche' Maya.  The double symbolism used in its name is considered allegoric to the dual nature of the deity, where being feathered represents its divine nature or ability to fly to reach the skies and being a serpent represents its human nature or ability to creep on the ground among other animals of the Earth, a dualism very common in Mesoamerican deities.

Quetzalcoatl: Quetzalcoatl ( ; ] ) (,    ) forms part of Mesoamerican literature and is a deity whose name comes from the Nahuatl language and means "feathered serpent".  The worship of a feathered serpent is first documented in Teotihuacan in the first century BC or first century AD.  That period lies within the Late Preclassic to Early Classic period (400 BC – 600 AD) of Mesoamerican chronology, and veneration of the figure appears to have spread throughout Mesoamerica by the Late Classic period (600–900 AD).

Supporting paragraphs: Kukulkan Quetzalcoatl
Answer: Q'uq'umatz