There was a time when Pepe and Ramos were utter thugs, stamping on Messi's hand I remember from Pepe. I forget which player it was, don't think it was Barca, where Pepe kicked out nastily against a player, gave away a penalty and then just stamped on his stomach very obviously on purpose. Ramose will throw his elbow at everyone, run 30 yards full pace and jump in looking like he's going to break someone's ankle/leg/neck/face. To be fair, both have been significantly better for a couple of years.
Tonight 99% of the cheating has been Barca, even Ronaldo going down, it was pretty obvious Pique made it look like he was going to take Ronaldo down, seemed much more like someone avoiding being tripped than intentionally diving.
Iniesta even with two nasty challenges now. But Suarez did a nasty tackle and dived to get someone a yellow card. Mascherano did a pretty bad tackle and then a huge attempt to get Ronaldo sent off. Real by and large have improved over the past couple years, actually thinking back to it Chelsea got much better under Ancelotti as well.