Hello, Knight,
After looking at the list, from the "no cemetery defined" are Find-a-grave profiles that I created. They did not appear until now, as far as I know. One example would be Kelly Marie Wegner (1977-1978) #249466514. On find-a-grave, I am known as Quiet Respect.
Children that were born between the census years and before there was consistent reporting, may have no other record than on a cemetery list. Often, no engraved stone was placed and the family may have moved away. I took the liberty to create find-a grave-listing for most of the children and adults when I could find a death certificate.
For older settlers, it is also possible a marker was never placed or that over the years the marker was broken by falling limbs or trees or by the freeze and thaw of temperatures. This cemetery, a few years ago, looked like Boot Hill. The Cemetery Association has straightened most of the monuments and planted quite a few trees to make it more garden-like. They do not replace the monuments, as this must be paid for by remaining famiy members that choose to replace the gravestones.