I came across an individual on a census record who isn't indexed, though everyone else on the page i
The individual is also part of a household whose other members were indexed. They're at the very bottom of the page. The link to the image is: https://www.familysearch.org/ark:/61903/3:1:939K-PM9C-83?i=21&cc=1538354.
UPDATE: In fact, there are several individuals who were skipped on this page during the indexing process. Searching the entire film number collection confirms they weren't indexed.