Just as one may become a regional or cultural celebrity, one may also become a celebrity in their niche market and have limited fame apart from it.
While Lisa Leslie is a WNBA player who has transcended her niche and has gained recognition even among those who do not follow women's basketball, a player such as Janeth Arcain is less likely to be well known among those who do not follow the WNBA.
Deitrick Haddon may be a popular gospel singer and considered a celebrity among gospel music fans however he may not be well known among those that do not listen to gospel music.