I came across some Yosts in 1900 Hitchcock County, Nebraska, Culbertson Township
82/82 Peter and Katie Yost with children Elizabeth, Martin, Mary, and Peter (Peter, Katie, and Peter are on the 1920 census - Also a Henry Yost)
98/99 Elizabeth Yost and Margaret ? (mother).
Thought they might be some of your Yosts.
Good hunting, Frank