Will do some googling, can't remember where I read it. Surely makes sense in a misogynist society, girls with male names escape the initial cv prejudice.
Life outcomes may have been overstating it somewhat, I think it may have been a study of job applications.
The question with Jayden however spelled would be whether the advantages of being male could overcome the class connotations. Would it be better to be Jayden or Octavia when applying for a job? Possibly it would depend on what the job was. However why should the Op care if she likes Jayden.