My girlfriend and I have been looking for some new somewhat plot-heavy yuri shows (doesn't need to be completely yuri-centered). Here's a list of some of the things we've enjoyed.
-Puella Magi Madoka Magica
-Yuri Kuma Arashi
-Yuru Yuri
-Blue Drop
-Hibike!Euphonium
-Riddle Story of the Devil
-Sasami Magical Girls
-Sword Art Online (although it's not yuri)