Well, the data exists in the SQLite database (see attachment), and it appears to be used if you sort on Series, but it doesn't seem to available as a calibre column - Publisher is in the same boat. I wonder why they're not regular columns?
Maybe there's a way of exposing the series.sort SQLite column as calibre custom column via a template.
Failing that try asking DaltonST if he could add a SeriesSort and a PublisherSort feature to his
Job Spy plugin.
BR