Kathleen Cunningham’s appointment to the East Hampton Town Planning Board last week was notable in one respect that has drawn little notice. By replacing a male board member who moved away, she became the third woman on the seven-member panel. This makes the planning board the exception to the rule in East Hampton Town, where among the boards whose composition is determined by town board vote, men occupy more than three-quarters of the seats. And among all the boards, the vast majority are white and non-Latino.