I used to think female leaders at major law firms were unusual, almost shocking—like seeing a gazelle gliding across Times Square.

Thankfully, they’ve become less exotic in the last several years. At a few firms, women have held the top spot long enough to be fixtures, such as Akin Gump Strauss Hauer & Feld’s Kim Koopersmith and Morgan, Lewis & Bockius’ Jami Wintz McKeon. And this year, more women are joining their ranks, including at Ropes & Gray; Kelley Drye & Warren; Boies Schiller Flexner; and Jenner & Block.