The names in CC are not robot Text-To-Speech, they have all been individually recorded by Jim, not just the name but the name in 24 individualised messages (including some sweary ones so it's not the computer swearing at you, it's Jim personally). There are now 750 names (x 24 recordings, remember) which has been a major piece of work.
If none of the 750 work for you first check
whether your name or something close to is not already in CC then
check whether one of near 8000 "stub"
versions is OK and if not read Jim's
note, only then add your name request to the queue in the Crew