If youre looking for non-legendaries itd be slaking with 670 or if you want pseudo legendaries there are dragonite, salemence, hydriegon, metagross, tyranitar, and garchomp
A pseudo legendary is a 2 type pokemon with a base stat of 600
Click in the top left hand corner where it says pokemon third one down that says pokemon with stats click that and then on the bar that says name, type, and then lists all the stats click on total and it will give you a list of total base stats from greatest to least and if you click total again it will show least to greatest