Anadarko Petroleum Corp., Edward Jones Investments and Red Door Realty & Associates have taken the top spots in the Chronicle's fifth annual Top Workplaces rankings. The Chronicle also singles out executives or companies for performance in special categories, ranging from leadership to ethics to communicating. Greg Armstrong, chairman and CEO of Plains All American Pipeline, was honored for leadership of a large company; Jeffery Hildebrand, chairman and CEO of Hilcorp, for leadership of a midsize company; and Mike Moody, president of Newmark Homes Houston, for leadership of a small company.