B'DAY is the only album were she wasn't emulating anyone

DANGEROUSLY IN LOVE in a way too.
I'd say SURVIVOR and THE WRITINGS ON THE WALL are her being herself too. DF = a group version of DIL so.
I AM is her doing Barbra and Celine. SASHA FIERCE is herself mixed with sth else that was not really good.
4 is her competing with STEVIE, MICHAEL, FELA KUTI, WHITNEY, MARY J BLIGE, PRINCE...