Wanderlei, Overeem, Anderson, Jones, Werdum, DC, Cain. Cain's clinch game IMO is overrated cause JDS' has one of the worst clinch games at HW and that's who he got known for his clinch game against.
Matt Brown is probably better/more well rounded at the Muay Thai clinch than Anderson...srs. May as well use this gif that's still queued up from another thread.
Jones, Overeem, DC, Werdum, Cain, Wanderlei, Anderson (in this order) with Anderson I don't think it is as much skill in the clinch, as the fright of vicious knees that none of those other fighters really have ..... well Ubereem is a different story maybe As far as takedowns DC is by far the best, but maybe not from the clinch IMO Overeem is seriously probably one of the most underated fighters in the clinch in all of mma. Dude never gets beat in the clinch.