Full Culture Features List:
Māori
Era: Early Modern
Affinity: Militarist
Quote: “I may live, I may die, another step upwards, at last the sun shines.”
Legacy Trait: “Kaitiakitanga”, All units get +2 combat strength when on forest or fortified tile. -50% reforestation industry cost.
Emblematic Quarter: Pā: +3 Strength Combat Strength in combat for Units in or adjacent to the District. Counts as a garrison and hamlet, can be freely placed, and exploits all adjacent tiles. +5 influence and +10 XP on unit.
“Pā are settlements heavily fortified with palisades and earthworks, built to protect and store nearby resources. They are a direct representation of their leader’s prestige and power.”
Emblematic Unit: Waka Taua. Replaces Caravel. Immediately unlocked, 4 movement, 32 strength, High Seas and Quick Embark traits.
“The construction of this massive war canoe involves lengthy rituals and careful supervision by a master craftsman. The result is a hardy vessel capable of carrying a war party over rough seas and performing devastating ramming attacks.”
Rapa Nui
Era: Medieval
Affinity: Aesthete
Quote: “Our ancestors are not gone, they watch over us always.”
Legacy Trait: “Spirits of the Ancestors”: +1 faith and +1 influence on emblematic district per era.
Emblematic Quarter: Mo’ai. Can be freely placed, does not exploit; +5 influence and +10 faith, -10 stability. +1 influence and + 2 faith per adjacent coastal water or ocean tile.
“These massive stone statues are constructed to honor revered ancestors, and are a testament to their builder’s prestige and power.”
Emblematic Unit: Matato’a. Unlocked at War Summons. 33 Strength, 4 movement, 200 industry, 1 population. Unique trait: Huri Mo’ai: grants influence for successful ransacks (5% of gold value per unit).
“The Matato’a are a warrior-caste who destroy the spiritual and political power of their enemies by tearing down their most treasured cultural monuments.”

Tahitians
Era: Medieval
Affinity: Scientist
Quote: “Do not fear the sea, fear the storm”
Legacy Trait: “Ti'ahuauatea'': +2 vision radius and +3 naval movement on all naval units. +5 science on capital per number of territories in your sphere of influence.
Emblematic Quarter: Marae. -10 stability, +5 faith and +2 influence. +1 science per exploited coastal water and lake tile in territory. Counts as a Research Quarter, +1 researcher slot on city.
“This is a sacred space where priests, explorers, and learned elders gather from distant lands to share their knowledge of navigation, geography, and the nature of the cosmos.”
Emblematic Unit: Tipairua. Unlocked at Seafaring Mastery. 18 Strength, 3 movement, replaces Transport Galley. High Seas and Expedition traits.
“The largest vessel to sail the Pacific for a thousand years, the Tipairua is the pinnacle of Tahitian nautical ingenuity.”
Samoans

I made a mod that adds 5 custom cultures from Polynesia: Lapitans (Ancient, Agrarian), Samoans (Classical, Expansionist), Tahitians (Medieval, Scientists), Rapa Nui (Medieval, Aesthete) and Maori (Early Modern, Millitarist), you can get it here: https://humankind.mod.io/polynesian-culture-pack

Full Feature list:

Era: Classical
Affinity: Expansionist
Quote: “All the world is as one family”
Legacy Trait: “Tui Manu’a”: -50% influence penalty from going over the city cap, -50% create outpost cost, -50% harbour industry or influence cost.
Emblematic Quarter: Fale Tele. 5 stability, +4 influence. +2 influence and +5 stability per adjacent district.
“This great meeting house is the center of Samoan cultural life. Constructed without walls to promote a sense of community, the ceremonies held within ensure a stable social order.”
Emblematic Unit: Va’a. Unlocked at Trade Expeditions. Replaces the Transport Galley. 14 strength, 3 movement, Skilled Navigator trait.
“The ingenious construction of this double-hulled sailing vessel is matched only by the advanced wayfinding techniques employed by its navigators.”
Lapita
Era: Ancient
Affinity: Agrarian
Quote: “The land is the chief and humans are its lowly servants.”
Legacy Trait: “Mana”: +1 food on coastal waters, lakes, forests and woodland.
Emblematic Quarter: Pile Dwelling. Can only be placed on coastal water or lake tiles adjacent to land. Exploits food and money from adjacent tiles land and water tiles, and can be freely placed. -10 stability,+3 money. Counts as a Market Quarter and a Farmer’s Quarter. +1 farmer’s slot on city.
“The Lapita built many of their villages directly above the water, placing their buildings on wooden stilts in shallow lagoons to better access the bounty of the seas.”
Emblematic Unit: Outrigger Canoe. Unlocked at Sailing, replaces the Transport Galley. 10 strength, 2 movement, Navigator trait.
“Outrigger canoes use supports on either side of the main vessel, providing superior stability, and allowing great voyages across treacherous and unknown seas.”

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