"Self-actualization" is a very 2020s concept of self-confidence.
None of them strike me as arrogant, except maybe Hemmer. A little.
Well, Ortegas liked to brag she was going to be the best pilot ever to graduate the academy, Hemmer’s a self-proclaimed genius and Chapel proclaims how she knows she’s good at her job. (“Chapel is one of Starfleet’s best, and she knows it,” according to the promo materials.) And that’s from 90 seconds of screen time.