I think they are suspect at best, and a couple of people have reported getting conditional offers for jobs listed as requiring ‘other’ (public trust or some non-security clearance) only to be informed that they needed to fill out a full SF-86.
A good topic for discussion if you get as far as receiving an offer.
the sensitivity/risk level determines the background investigation type. Not all critical/high risk positions require access to TS or even S information.
Keep in mind, USAJobs is at the mercy of the HR types that put the info in there, including the mysterious application status updates… or lack thereof.