Right now I am ONLY talking about ability.
Many truly great ones have yet to be mentioned on this thread and perhaps more people can add to the following list.
Ginger Rogers had an AMAZING range...singing, dancing, comedy, drama, you name it, she was GREAT at it.
Myrna Loy...from major ( often Asian ) villainess, to wise cracking, upper class wife of Nick Charles, to everyone's idea of THE DREAM WIFE...she was believable in every role.
NATALIE WOOD...unlike her counterpart Margaret O'Brien, she made the leap from CHILD STAR to an accomplished adult actress, who could easily do both drama and comedy.
The BRIT "GREATS" are a MASSIVE amount. a very few of whom have already been named.
Okay...have at it.
Ginger Rogers has definitely grown in my estimation, once you separate her from Fred Astaire (a real hambone along with Gene Kelly). She had it all, everything you name, and besides she was a real dish, a babe you might say. When I spot her I put down the remote.
I’d like to add Barbara Stanwick to that group. Although as she aged she became more bitter and edgy, a young Barbara was downright perky and pleasant.