For advancing in kage and superkage rank a quite high quantity of initiative is needed. If you own less than 11000 initiative is more or less impossible for you to reach it, regardless the team because you lose both against whale teams, against your counter meta teams and also against your similar idea teams (unless you are a superwhale and use earth main + 6 tails naruto lineups). If you own that very minimum initiative i talked about then you can try to reach it with immortal teams (cf and af ones) or with high control sb teams. Other options require you to win most of the times initiative (so, for uk bracket, to be around 13000 initiative), in that case mei mabui tenten gnw or root of warrior teams should work for you too.