Unknown Sloan, Null, Keeth, or Mize

This photo of working men is from the Sloans, Keeths, Nulls, or Mize lines of Missouri and Oklahoma and Kentucky.

This photo of working men is from the Sloans, Keeths, Nulls, or Mize lines of Missouri and Oklahoma and Kentucky. Could they be descendants of Thomas Shields Sloan and Margaret Clark Alexander, descendants of John Keeth and Katherine Whittle, related to Chester Mize and Hazel Sloan, or related to Michael Null and Eveline Hensley? Any help identifying would be most appreciated!