The Vampire Diaries Witches | Seven Devil's

Qetsiyah - Creator of the immortality spell, Creator of The Other Side, 1st Bennett Witch, Traveller.
Bonnie Bennett - Bennett Witch, Psychic, Creator of a psychic dimension, Expression magic.
Freya Mikaelson - 1st born Mikaelson Witch, Immortal.
Nora Hildegard - Heretic, Destroyer of The Phoenix Stone.
Davina Claire - Harvest Witch, Breaker of (Klaus') Sire line.
Josette (Josie) Saltzman - Siphon Witch, Survivor of dark magic, Dark side, Gemini Twin.
Hope Mikaelson - 1st born Mikaelson Witch, Original Tribrid, Cresent Wolf, Labonair Descent, Hybrid/Heretic Sire.
In my opinion, these are some of the most powerful witches within the whole universe. From Bennett's to Mikaelson's and even Gemini's, these witches are incredibly powerful.
Some even creating some of the most powerful spells to ever exist.
Qetsiyah, created the spell for immortality, that Ester would one day manipulate to make the spell of creation for Original vampires.
Freya Mikaelson, the 1st born of Ester (the original witch) and Mikael being handed to Dahlia at a young age, being taught some of the most powerful magic ever known. Upon reuniting with her family, she saved them time and time again and even killed Lucien, once he was a beast.
Nora Hildegard, one of the first heretics, being taken in my Lily Salvatore at a young age, one day raining terror down on Mystic Falls. Being bold enough to be a gay woman in the 1700s and eventually her and Mary would destroy the Phoenix Stone, once and for all.
Bonnie Bennett, the first witch we ever meet. A psychic, mixed with a Bennett witch, who discovered the power of expression, embracing it to save her friends. And holding the power to kill originals. After years of putting her friends first, she falls in love only for him to die in her arms but she created a psychic dimension preserving his soul.
Davina Claire, a harvest witch who refused to be harvested. She held so much power it began to eat her form the inside out, forcing her to be sacrificed. She returned from the dead, multiple times, refusing to die. From the auntsisteral realm, she resurrects a whole harvest of girl's. Eventually, joining the Mikaelson family.
Hope Mikaelson, child of Klaus Mikaelson, the original Hybrid & Hayley Marshall the first unsired Hybrid and Alpha to the Cresent wolves. Through the magic of her grandmother she became the first and only Tribrid. With the power of the hollow she become deadly to all, even herself. Upon becoming a full Tribrid her humanity is turned off, and the fate of the world around her becomes unclear ...
Josie Saltzman, one of the Slaltzman twins, who's mother died before they were born being raised and nurtured by Caroline Forbes. When the Gemini origins of the family is revealed, it becomes clear that one day, she'll have to kill her own twin, or be killed. In order to escape the prison world she absorbs dark magic and a whole nother side of her is revealed and she struggles to balance to power.