I don’t know. Technically, anything with HG in it is mashable, unless something hits them at the exact same frame (maybe the frame immediately after) that HG grabs them.
If something hits really fast after HG grabs them, it’s generally unmashable.
Most MTs are combo enders, so try to soften them up before doing one. After they roll out, you have to rush them again.
Solo MT crossup: ROM in corner, dash forward s.hk (one hit) xx MT - sometimes the s.hk combos, sometimes it doesn’t, but if you do the add ROM instead of addf ROM, the s.hk should be a crossup. Anyway, they’ll recover from the s.hk and land behind you. Does almost 50% on Cable, and it puts them in a bad position (either get OTG or roll back into corner)