Perhaps this will help you in the distribution of the Andes Region.
Most of the Kingdoms shields are already there, although perhaps I should name a few more kingdoms:
Cajamarca Tribal Kingdom:
According to the drawings, they wore armor similar to the Chachapoyas (Chachas), probably because their territories included mountains and Amazon jungle.
The kingdom of Cajamarca (or Caxamarca) was an ally of the Chimu Empire, so the Chimú sent an army to defend Cajamarca when the Incas invaded (According to the chronicles, the Chimús sent 1 military “Division” (Unu) which would be equivalent to 10,000 soldiers) . Approximately half a century after the Chimú-Inca war, as is now known, Atahualpa was captured in Cajamarca by Francisco Pizarro.
The animals with which the kingdom of Cajamarca is represented were the Jaguar and the snake (so they had a great influence from the Amazon jungle), they even have a mythical hybrid creature of these animals.
The main deity of the Cajamarcas was Catequil, God of Thunder, who is also part of the Inca pantheon.
There is also the flag of Cajamarca in EU4, I think it has Hispanic influence.
Huyla Tribal Kingdom (Huaylas):
Descendants of the Recuay civilization, who fought against the Moche kingdom but ultimately fell to the influence of the Wari Empire.
The Huyla had a fierce resistance against the Incas before being conquered, however, they maintained a great role during the Spain-Inca war.
Atahualpa gave Quispe Sisa (later called Inés Huaylas Yupanqui) as wife to Francisco Pizarro when he tried to negotiate his freedom, Inés de Huaylas was a noblewoman of the Huaylas and daughter of Huayna Cápac (like her brother Paullu Inca who ended up being named Inca (emperator) for the Spanish).
During the siege of Lima (battle that defined the future of South America) carried out by Quizu Yupanqui (by order of Manco Inca), the Cuzqueños (Incas) were about to take Lima, however, in the final assault 20,000 Huaylas soldiers arrived by order of Inés Huaylas Yupanqui to support her husband, Francisco Pizarro, so the Spanish managed to defend the city.
It is a very extensive story, if anyone is interested in knowing the details I leave these videos 1 2 and this page.
And if you’re wondering, Francisco Pizarro and Inés de Huaylas had a daughter named Francisca Pizarro who ended up inheriting all the assets of her father before her untimely death, she was a noblewoman in Spain.
Possible Huaylas symbols:
Recuay Symbol
Huayla flag of EU4
Heraldry Huaylas granted by the Spanish.
P.S: I was struck by the “waifus” created for the Cajamarca and Huyla civilizations in the EU 4