Astus wrote:Keizan Jokin
is regarded as the second founder of Soto Zen. Menzan Zuiho (1683-1769) made Dogen and his writings the central source of doctrine in Soto, and Gento Sokuchu
de-emphasised the use of koans in Soto. In the modern era the most famous is probably Sawaki Kodo
You may also look at this: History of the Soto Zen School
Not attempting to nitpick, but it was my understanding that Dogen didn't emphasize Koan practice, either. To him, the world, or mind, as-it-is, is the Genjokoan. The mind is a koan that can liberate when penetrated.
Also, Taizan Maezumi Roshi was pretty famous... and he was a Soto lineage holder as well.