bavetta and crawford are 2 of the most senior refs in the league. we know them because they have been reffing nba games as long as many of us have been alive, and they have done countless playoff games and marquee matchup games over the years. palmer was the first female nba ref. she was all over the sports news, and highlighted all the time in her first couple of seasons. it makes sense that you know those ones.
that said, crawford is an attention whore, and bavetta is comically old and pretty entertaining (he did that allstar game race with barkley a couple of seasons ago). they both seek the spotlight.