The antonyms for the phrase "more low-profile" are "high-profile," "prominent," and "visible." A high-profile person or event is one that is prominent, famous, and widely known. Such a person or event is characterized by great public interest, media coverage, and attention. On the other hand, a low-profile person or event is one that is not well-known, does not attract much public attention, and operates below the radar. In contrast, a high-profile person or event commands attention and is of great interest to the public. In essence, the antonyms of "more low-profile" entail being more visible, well-known, and in the spotlight.