If you think Steve is on the light side of the Force then you’re kidding yourself because Steve Rogers fights- and has always fought- with anger, and one of his biggest fears is loss (Re: Tearing down a HYDRA base for Bucky, tearing apart the Valkyrie after Bucky dies, hunting down the Winter Soldier after Fury ‘dies’, tearing down HYDRA and Shield after finding out who the Winter Soldier is). He doesn’t fight to protect or defend like Jedi are supposed to, at least not before he was Captain America, and even when he’s Captain America he fights with his anger as a motivater. He was angry at bullies and at being smaller than the average guy in the first movie, and during missions shown in movies most of them post-Bucky’s fall have him brash and angry when fighting. The only time he really had a lighthearted mood to him when in a fight was with the Howling Commandos. He may not kill people, but what fuels him is loss and his anger, meaning his designation is with the Dark Side.
I agree with everything said above.
But.
You could not, under any circumstances, get Steve Rogers to hurt an innocent. Wouldn’t happen. If you hurt someone he cares about he will destroy you six ways to Sunday, but there is no world, ever, in which Steve would kill a child or someone trying to do the right thing.
So the light/dark designation is far too simplistic when it comes to Steve Rogers. He would feel the dark side, and be most powerful when calling on the dark side, but he would never fight for the Sith, or the First Order, or anything like that. So he would either figure out how to be the only dark Jedi fighting for the side of the angels, or he wouldn’t use the Force and would instead figure out another way to help and protect people.
Steve Rogers cannot be contained by your Jedi binary.
Steve Rogers would never hurt an innocent person, he hates when innocent lives are lost during a mission, when someone even sprains their ankle on a mission because it’s an unnecessary causality.
I think he’d join the Resistance- because that’s where his morals point- and do as much good as he possibly can being a Jedi on the Dark Side. He’d be the first person to brake that Dark Side=Evil stereotype because he’d use his powers for good.
The Jedi consul would probably fear Steve and his dislike for conformity and ability to both be on the Dark Side and be a good person. His morals don’t line up with theirs and that’s a threat to them, but does Steve care? Hell no.
The Archery Range 