I get it too, but I think Stanwyck was the best actress that Hollywood ever produced so it kind of takes me back when I read negative comments about her. What actress can be a lead role in film noir, westerns, comedy and drama. The only genre she might have been restricted from is musicals...
Wow, you watched those movies in their entirety and you still dislike Stanwyck? If so then there isn't anything else I can say or recommend that will change your mind.
I suggest you expand your film viewing of all six actors as well as the actors Walter suggested. Checkout some of the following movies:
The Thin Man
My Man Godfrey
One Way Passage
Mister Roberts
My Darling Clementine
The Breaking Point
White Heat
The Maltese Falcon
Angels with Dirty Faces...