In 12.3 (12.3.8 and before) and 21.0 (21.0.3 and before), the list of Login objects available in the Attributes tab of JOBS shows in a seemingly random order:
In 12.2 and before it was in alphabetical order
This is a defect
Upgrade to 12.3.9 or higher - please note, the fix to this is with the AWI; the following components must be upgraded together: AutomationEngine, Utility, Initialdata, AWI
Will be fixed in 21.0.4