There was a pretty awesome illustration in one of the Champions rulebooks (c1980's I don't remember which edition but it was a revised one) of an Energy Melee type character power/smoke rising from her fists surrounded by dead/unconscious baddies slumped and fallen next to her. That's the one that comes to mind when I think Energy melee.
Champions was kind of a good ruleset to build something like this. "Energy Blast - Range = 0" giving you points discount.
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Iron Maiden from the Destroyers in Villains and Vigilantes used a Staff that was an energy melee type attack, at least that's how the illustrations looked. Of course that was a weapon though.
That Adventure Module had a defeated hero named "Morning Star" with an awesome take on a Mace Power. Basically her gloves ended in tech maces from what I could make out. Sort of a tech version of a gauntlet/punch dagger - but with a Mace. (The V&V Module version of the character not the later more generic fire hero "Elementals" version)
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As to comics ..
As mentioned Iron Fist would be Energy Melee, but of course that's his high end attack, not his normal combat.
Speedball could be Energy Melee (looks wise sort of), Or maybe Kinetic Melee (conceptually)
I think most "Energy Melee" Characters in comic Books also have Super Strength, I guess it depends on which is the main type of attack.
A lot of the "Energy Blast" type characters do also.