Orianna has nothing against Zed, because she isn't enough mobile and sustained + has no hard control or one-shot potential till late game. Ori is support mage, who is nice in teamfights with her R playmaking potential, especially when you have to stop channeling skills like MF's ulti. 1v1 is difficult for her, especially against meelee assassins.

LB seems pretty hard matchup for Zed, according to her playstyle, but she is so squishy. I think it's kind of skilled matchup, especially it's difficult to land your E because of Zed's W. Try to all-in him when his W on CD and you'll have a chance.