There are those who say that Paul and Peter or Paul and James preached a different Gospel, and side with Paul. That doesn't make sense. If Paul were actually preaching a different Gospel, why would they assume he was right.There are also those who read conflict where there doesn't have to be. They interpret Galatians out to be after the council of Jerusalem and say Paul was rejecting the decision, at odds with James. The liberals in the 1800s came up with the idea that Paul was at odds with James. That comes from reading a conflict into scripture where one need not do so. It also doesn't take into account newer discoveries, including the fact that the first missionary journey churches were in the province of Galatia when Paul visited them, and he probably wrote Galatians rather early, before the Jersualem Council