Who Is Mighty Thor From Thor: Love And Thunder?
As per the comics, after being diagnosed with cancer, Jane Foster is able to pick up the Mjolnir
The hammer tranforms her into God, gives her powers like super-strength, durability, stamina, and can control lightning but not as much as Thor
However, every time she transforms into Mighty Thor her cancer spreads even more rapidly.
In the MCU, after Cap, it is another human, Jane Foster, who is able to pick up Thor's hammer
After picking up the Mjolnir, Jane Foster turns into her superhero avatar - Mighty Thor
MCU has to still explain how, when, and where did Jane Foster get the hammer from in the first place.