I guess that depends on whether you only travel through time (time vs space), or whether you follow the time-line back (aka. travel through time and space, kinda like both you and I are doing right now).
EDIT: there's also the reference point, and whether you can bring a physical vessel, or have to possess your younger self.
Back to the Future appears to be using a kind of relative spatial reference point, and you bring your body along the ride.
Contrary, Steins Gate (the part shown in the series) uses a body as reference, and has you "possess" said body. Though it hints that Back to the Future-like travel is also possible.
Not sure if I can name any story where time and space are disconnected.
Was just about to say, war Cleric says "Hi".
Deadly at range, terrifying in melee. And possibly one of the best healers, if you count damage prevented as healing.