There are a lot of Line of Sight Issues with McGinnis's Wall. All listed I've found to ignore her wall's LoS.
(Numbers listed are their ability keybind, Marked with a * means that this ability ignores all walls, and may be intended)
Abrams: 1* & 4 Bebop: Uppercut Dynamo: 4* Talon: 3* & 4 Infernus: 4 Ivy: 3 Kelvin: 1 McGinnis: 1* & 4 Mirage: 1*
Mo and Krill: 1* Pocket: 1,2*,3*,4 Seven: 1* Shiv: 2 Viscous: 1* & 3 Warden: 1* & 4 Wraith: 1 Yamato: Alt Fire
(Numbers listed are their ability keybind, Marked with a * means that this ability ignores all walls, and may be intended)
Abrams: 1* & 4 Bebop: Uppercut Dynamo: 4* Talon: 3* & 4 Infernus: 4 Ivy: 3 Kelvin: 1 McGinnis: 1* & 4 Mirage: 1*
Mo and Krill: 1* Pocket: 1,2*,3*,4 Seven: 1* Shiv: 2 Viscous: 1* & 3 Warden: 1* & 4 Wraith: 1 Yamato: Alt Fire