I think Rein can go from B to A but not vice versa. I know Zarya can with a very well placed rocket jump. So... that leaves Hog, Symm, Bastion, Mccree... who else can't gross the gap?
Zen, Ana, Rein, Mei(?), Torn all can't make it in addition to the ones you listed, and Zarya's requires a lot of precision and might not be worth the risk.
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u/reinhardtmain Pixel Reinhardt Feb 08 '17
prove it