Anyone who has studied Greek myths even casually
So glad that what the names of candidates for jobs are would be some way down my list of criteria, knowing no Greek myths (that I can think of, or not knowing them to be Greek if I do know them, IYKWIM).
If they're OK with spelling, maths, can use a computer, and write English sentences, not "text speak", then that's likely to be good enough... Degrees and/or puzzling names, not needed.
If someone the other end of a phone cannot instantly recognise a name, they probably would not be one for me to consider getting a job.
Cercei, therefore, quite unlikely, Ella / Ruby / Claire / Sarah, fine, of course.