To put into context, Force powers such as Force Lightning are considered exclusively Dark side powers. Dark Jedi are defined as Force users who have succumbed to the Dark side, yet are not officially a member of either the Jedi or Sith Orders. I assume most readers understand the distinction between Dark Jedi from Jedi or from Sith, so I shall not elaborate further.
So first, what are the equivalent Light Side-exclusive powers? I've seen Light Side-only powers in games, but I hope to cross-reference with actual lore to be certain they aren't Light Side exclusive for game balancing and mechanics alone. Other than that, the Light Side is described as more powerful than the Dark Side, relying on knowledge instead of sheer power to prevail, though is harder to master. This leads me to believe there do exist ways of using the Force through the Light to be learnt that cannot be gained through the Dark.
Secondly, are there "Light Jedi"? Force users who are aligned with the Light Side or simply do not use the Dark Side, but aren't members of the Jedi or Sith Orders. Ahsoka Tano comes to mind, but technically she had Jedi training. Dark Jedi, however, are generally considered to be inferior in training and Dark Side expertise compared to Sith, so I'm not sure if Ahsoka can be considered a legit Light Side equivalent of Dark Jedi by definition. Care to enlighten me on this? Thanks!