Are there more...?
With the introduction of Captain Britain, it gives us another completely unique character with the same alter ego as a previously existing champion - in this case Psylocke.
Other than the aforementioned duo, and Green Goblin/Roblin and Iron Patriot, can you think of other characters which share the same alter ego? Different iterations of Spider-Man, Iron Man, and Hulk don't count, because they're essentially the same hero, re-branded.
I'm not even sure if any more exist within game, tbh, so kudos if you can think of any.