Benjamin Bloom published his taxonomy in 1956. In 2001, the categories were revised. Synthesis was taken out and Creating put in (among other smaller changes).
Erik Francis points out (article link below) the importance for learner to synthesize and puts it back in. Creating is kept. Now there are 7 levels of understanding.
https://www.linkedin.com/pulse/return-synthesis-connecting-critical-creative-thinking-francis/