As you stated you can hide the job names with Secure Print jobs. Also, when the Secure Print Jobs are at the machine the jobs names cannot be seen until the folder is accessed by the user that sent them.
If you want to hide all Job Names after they print go into Security>Personalized Information>Completed Jobs>Hide.
Also, in Security>Secure Print>Concel All Job Names option.
Problem/challenge: How to avoid users to see other users print job information.
Device Altalink C8155. Need for hide jobs information. I did find out how to hide "Secure print" job names, but ordinary Job names hide is not possible. In Versalink you can hide "Jobs" App, but either that solution is not available with new Altalink C8155.