I’m very sorry, @alicia_fleri, I did not mean to offend. It was just such a strange issue you described that I could not conceive of what else could be the cause of it. Seeing your screenshots, though, I think I have an idea.
You have over 1000 records in that table, and when you sort by “Organization A-Z”, it will always put records that have a blank field for “Organization” first in the list. It may be the case that you have a whole bunch of completely blank records that are being sorted to the top of the list when you sort by “Organization”. Try sorting by “Organization Z-A” - does anything show then?
You could also try Grouping by “Organization” and then collapsing the groups to see if the “blank” group has a significant amount of records in it.
If this does not turn out to be the issue, then you may be experiencing a very strange bug!