Gentlemen, but the highest win rate doesn't necessarily mean the strongest deck... Although, I don't know how that applies specifically in this case.
Right now, after various experiments, I've settled on a knight-based deck. It seems to be working well, better than before. It includes various cards costing 1, cheap commanders, buffs, Alberts, and so on. An additional plus is that matches, on average, don't take too long, haha.