Odd lists when Christian Bale is slightly older than Di Caprio and had his break out role earlier with Empire of the Sun.
Can't say I prefer either list as a whole and like and dislike actors in both.
In the first list Oldman has done an insane range of characters, accents etc and become unrecognisable in some roles like Mason Verger in Hannibal. Compare that to his performance as Churchill or Jean Baptiste Emmanuel Zorg in The Fifth Element, Stansfield in Leon or Dracula and his range is apparent and far broader than most of the others on both lists.
Bale, while a less skilled actor probably puts the most effort into transforming his own body for roles. The ups and downs in weight between The Machinist then Batman Begins, The Dark Knight and The Fighter then the Dark Knight Rises. Then onto Vice...That level of transformation takes a dedication most of the other actors in both lists can only dream of.
Di Caprio knows how to pick roles that suit him perfectly and works best under equally brilliant directors which he does often. Scorsese, Tarantino, Nolan, Inarritu, Scott, Spielberg
Hardy is fast becoming a brilliant mix of the above. Talented in changing accents and voices, dedicates himself to transforming his physique drastically when the role calls for it. Bit of a mixed bag when picking scripts to suit him though. Same with Gyllenhaal and to a lesser extent, Macavoy
Some on those lists I'll never understand why they get the recognition that they do. Neeson and Denzel rarely play parts that require any change from who they are.
Bacon is underrated and a lot of his best performances were in relatively unknown films like Murder in the First.
Gosling is overrated and is basically a wooden plank although that suits its purpose in the Nicolas Winding Refn movies he's been in.
Cumberbatch is also overrated. Rarely plays anything requiring him to be anything other than himself. Eddie Redmane is far superior.
1 glaring omission from the lists Daniel Day Lewis. A case can be made that he's better than all of them.