7. Tobirama Senju
Tobirama Senju was the second Hokage of Konohagakure and was the creator of most existing jutsu. Even though he was so talented it was a surprise he didn’t have even one Kekkei Genkai ability. His brother Hashirama had wood release but Tobirama didn’t have it.
6. Asuma Sarutobi
Asuma Sarutobi was the son of the third Hokage, Hiruzen Sarutobi. I think that Asuma was very talented but was not given enough special new powers that would make him a standout shinobi among all the others. Instead, he had two simple chakra blades. Being the son of the Hidden Leaf’s best ever Hokage, you’d expect better from his son.