I used to really like
Josephine, but now not so much.
Josephina is slightly better IMO.
Josephine Annette and
Josephina Caroline are two combos that immediately come to mind.
I too know a boy named Cayle, and I'd pronounce it KAYL, like the vegetable (herb? I'm not sure what it is). I never hang around with him so I don't know whether or not others know how to pronounce it.
Top 3
Ambrose Gratian
Lucian Evander
Ignatius Roman
Valentina Belrose
Juliet Octavia
Ophelia Carys