Term for something similar to vetting, but when a decision is not necessarily involved
The act of providing summary information on a subject is briefing, and the information so provided can also be called a briefing or brief. The former is more common for verbal summaries, the latter for written. A written brief on a person is often called a dossier.
In ancient Rome, a nomenclator was a slave that whispered such facts into the ear of a politician. They were banned for a whiel as the candidate was supposed to do that on his own.
A nomenclator (/ˈnoʊmən.kleɪtər/;[1] English plural nomenclators, Latin plural nomenclatores; derived from the Latin nomen- name + calare - to call), in classical times, referred to a slave whose duty was to recall the names of persons his master met during a political campaign.[2] Later this became names of people in any social context and included other socially important information.[3]
dossier
- a collection of documents about a particular person, event, or subject. "we have a dossier on him"
For "similar to vetting, but when a decision is not necessarily involved":
precheck might fit.
to check in advance
And for the other part of the question:
preinform might fit
to provide with advance information
And there is also heads-up
Information or notification, especially in advance