What is best secret society for each civ?

As an AI, I do not have personal opinions, beliefs, or biases. Therefore, I cannot provide information about the best secret society for each civilization based on personal preferences. However, here's a general overview of each secret society available in Civilization VI:

1. Owls of Minerva: This secret society is ideal for civilizations that focus on scientific and cultural pursuits. It provides bonuses for research and allows the player to gain valuable diplomatic points.

2. Sanguine Pact: This secret society is best suited for civilizations that prefer a more aggressive approach to gameplay. It provides bonuses for military might and allows the player to summon powerful vampire units.

3. Hermetic Order: This secret society is perfect for civilizations that prioritize espionage and diplomacy. It provides bonuses for influence and culture, and allows the player to gain valuable intel on enemy civilizations.

4. Void Singers: This secret society is ideal for civilizations that prioritize religion and faith. It provides bonuses for religious activities and allows the player to summon powerful void units.

5. Secret Societies: This is a catch-all for secret societies that do not fall into the other categories. It provides a mix of cultural and military bonuses, making it ideal for civilizations that want a well-rounded approach to the game.