Which global coffee chain named its customer loyalty program levels after elements from Greek mythology?

The world's most successful brands often tap into mythology and folklore to create powerful marketing campaigns and customer experiences. Ancient stories and cultural symbols have become integral to how many companies position themselves in the marketplace. This trivia question tests your knowledge about how a major global brand has leveraged mythology in their customer loyalty program, creating one of the most recognizable status symbols in retail.

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Starbucks (Green, Gold, and Odyssey levels)
Costa Coffee (Hades, Poseidon, and Zeus levels)
Peet's Coffee (Argus, Titan, and Olympian levels)
Dutch Bros (Minotaur, Pegasus, and Phoenix levels)