What I have found so far:
(1) Applicant: A person having applied for a job (e.g. filled out web-form)
(2) Candidate: An applicant the recruiter thinks might be suitable to hire, so there will be some follow-up (e.g. job interview), though that is no guarantee the candidate will become an employee of the company.
(3) Signee/Signer: A person signing something or having signed something.
Is there a name for a person between (2) and (3), who e.g. has completed an online job-interview, was seen to be suitable for hiring, got a job offer, agreed to accept and now the recruiter is waiting for the person to come to the office to sign the employment contract.
I initially considered posting this in the workplace community, but I feel it is more of a language thing.
Edit: Thanks for the answers/leads so far. It came up in discussions and it might be used in some English documentation for the company workflow. We are all non-native English speakers, so we appreciate the input. I am keen on knowing what will be used for the documentation and probably pick that as answer. But I was told that will take some time.