It's a lot of the same top athletes, for one.
For two, track and field isn't universally esteemed like it once was. It's been replaced by swimming, which peaked 8 or 12 years ago. Track has a ton of stars, especially on the women's side, and we'll see if they become a big story.
For three, the biggest American star is Biles, and the revolving story around her, before the Olympics, will be the Twisties and mental health. People were tired of that about 14 seconds after it happened 3 years ago, and they're tired of that storyline now and they will be especially tired of how the story is framed, as it being more significant than anything Biles has done.
For four, the best-known American team is USWNT, and the story around that team, since last summer, is no longer "dominance and discontent" but just "discontent." I'm sure NBC and other outlets are ready to mine the team for more political commentary while hoping they're out for revenge, or something, against "the world," which the American media will take pains to project as Trump voters.
If Caitlin Clark makes the WBB Olympic team, she'll be a story.