Only Thor can produce lightning without Mjolnir. But the point of carrying Mjolnir means whoever carried it are worthy to be the king of Asgard and gets the power of the God of Thunder. But if someone wields the hammer and if Thor is still worthy of wielding the hammer, than the 'someone' couldnt produce lightning.
Can Thor control lightning without Mjolnir Norse mythology?
Weather Manipulation: Wielding Mjolnir grants its master the ability to control the base elements of a storm, i.e. rain, wind, thunder, lightning and more (although Thor can control them by himself, it seems that Mjolnir boosts his ability of controlling the base elements of a storm).
Comic book Thor has control over the weather but needs his hammer for refine that control. Here's an example. He had been captured and kept without his hammer by the planet of Angels. It took a while but he summoned a storm to free himself.
Can Captain America summon lightning without Mjolnir?
Captain America did become a god but only momentarily because when he lets go of Thor's hammer, he would lose of all Thor's powers. He cannot summon lighting without the hammer because that is Thor's physical power in the MCU.
If that 'someone' wields that hammer and Thor is unworthy of wielding that hammer (Like the unworthy Thor in Thor 1), then that 'someone' is able to produce lightning. Same applies to Vision, Thor is the God of Thunder. Only he can produce lightning.
In order to grant anyone powers, Thor needed to channel them through the Thunderbolt of Zeus - which is why he didn't use this power in Avengers: Endgame.
Stormbreaker has the additional power to summon the Bifröst, allowing Thor to teleport anywhere in the Nine Realms. Screen Rant has identified Stormbreaker as the more powerful of the two, based on this ability, as well as it being a much larger and edged weapon.
After saving the world, making a play to sacrifice himself, and defeating Thanos' army, he was not able to lift Mjolnir in Age of Ultron. This shows that being a hero and doing occasional good deeds does not make you worthy. Tony wasn't a bad guy per se, but certainly not his best self yet.
By most accounts, Superman seemingly outclasses Thor in terms of raw strength, especially in earlier versions of the DC Universe. He's pulled planets, punched people into orbit, and performed all sorts of wild feats of strength.
Can Thor summon lightning without Mjolnir Norse mythology?
Odin told him that he isn't the god of hammers, but the god of thunder. Mjolnir was only to channel his power, not the source of it. Can Thor create thunder without his hammer? Yes he can form, create, and manipulate thunder/lightning without the use of his hammer.
Thor just fixed his hammer Mjolnir after years of turmoil, and the Uru mallet has been reborn stronger than it has ever been. Mjolnir has been plagued by the God Tempest, Mangog, and Odin for years, but after Asgard's new king heals it, a beloved Asgardian tells Thor of the hammer's new strength.
On their own, both these noble heroes are capable of beating incredible forces. But for all Shazam's power, he does not match Thor's experience in using the more arcane elements of his abilities.
The Hulk and Banner's previous conflict kept either of them from lifting Mjolnir, but their being at peace as Smart Hulk could change that. That was certainly true for the Hulk, who was shown in the first Avengers movie as being unworthy of wielding the weapon.
While the primary Thanos from Earth-616's universe was defeated and was never worthy to lift Mjolnir, it's possible that a future (or existing) variant of Thanos could.
Unlike Mjølnir, however, the weapon is not enchanted to prevent those deemed "unworthy" from holding it, making anybody with sufficient strength capable of using the weapon.
Storm breaker is meant to be the strongest weapon of Asgard and could even summon bifrost, says Eitri. But there is no enchantment or spell on it like it was on Mjolnir. So one doesn't have to be worthy to weild it, just the strength to lift it. Clearly Thanos is capable of lifting it.
Yes it can because Superman has a weakness to magic and Thor's lightning is magical (actually it is his divine magic). The lightning would affect him the same as Captain Marvel's Shazam lightning would.
Could Thor have killed Thanos if he aimed for the head?
Thanos himself implied that Thor would have killed him if he had gone for the head, thus preventing him from snapping. Post-Awakened Thor later killed Thanos with one hit when he went for the head using Stormbreaker.
Not only does it make Thor even more dangerous in battle, it allows the Thunder God to fly, conjure up storms, and even control lightning. As it turns out, this later power applies to the magic lightning wielded by other heroes, including DC's magical champion Shazam!
