Humankind: Cultures of Latin America Review (Galactispunk)
More of the same. Not really interesting or worthwhile by itself unless you find the new cultures cool enough to be worth the price. I'd recommend waiting until there's a bundle with all of the culture packs so you can get all of them at a cheaper price.
Regarding the cultures included in the DLC, they're on-par or slightly more interesting than base-game cultures.
Caralans are effectively Harappans but for mountains instead of rivers (which is very nice if you don't get a starting position near rivers).
Nazca are "unique" and not in a good way.
Taíno fill the gap of a wide-oriented culture in the Medieval era.
Inca makes mountains actually alright. Alongside the Caralans they're probably the best reason to get this DLC since there aren't any base-game cultures that give bonuses for mountains.
Argentinians are my favourite culture in this pack. Their emblematic quarter makes late-game warfare a lot more tolerable if you're playing wide.
And Cubans are kinda meh. They're a jack-of-all-trades culture who's bonuses don't really complement each other well. Plus, you can find better versions of their bonuses in other cultures during the same era (Soviets for combat strength, Egyptians for influence and Brazilians for food).