These are all very upperclass-English to me (although loads seem to be taken from other European cultures at one point and reclaimed… I guess that’s from aristocrats marrying into foreign families for money and that sort of thing)
[name_f]Araminta[/name_f], [name_f]Arabella[/name_f], [name_f]Aminta[/name_f], [name_f]Amabel[/name_f]
[name_f]Jessamy[/name_f], [name_f]Jemima[/name_f], [name_f]Jocasta[/name_f], [name_f]Jessamine[/name_f]
[name_f]Xanthe[/name_f], [name_f]Iolanthe[/name_f], [name_f]Anthea[/name_f], [name_f]Delphi[/name_f]
[name_f]Imogen[/name_f], [name_f]Cressida[/name_f], [name_f]Rosaline[/name_f], [name_f]Perdita[/name_f], [name_f]Viola[/name_f], [name_f]Amelia[/name_f], [name_f]Ophelia[/name_f], [name_f]Olivia[/name_f], [name_f]Silvia[/name_f]
[name_f]Francesca[/name_f], [name_f]Elizabella[/name_f], [name_f]Evangeline[/name_f], [name_f]Virginia[/name_f], [name_f]Lavinia[/name_f], Leopoldine, [name_f]Celestia[/name_f], [name_f]Gabriella[/name_f], [name_f]Angelina[/name_f]
[name_f]Clementine[/name_f], [name_f]Clementina[/name_f], [name_f]Constance[/name_f], [name_f]Clemency[/name_f], [name_f]Clara[/name_f], [name_f]Christina[/name_f]/[name_f]Christabel[/name_f]
[name_f]Romilly[/name_f], [name_f]Ottilie[/name_f], [name_f]Cordelia[/name_f], [name_f]Bryony[/name_f], [name_f]Peony[/name_f], [name_f]Eulalia[/name_f], [name_f]Primrose[/name_f]
plus the obvious [name_f]Elizabeth[/name_f], [name_f]Katherine[/name_f], [name_f]Margaret[/name_f], [name_f]Emma[/name_f] etc.
And then the short, nicknamey forms were copied by the lower classes (‘peasants’) and given as full names…
[name_f]Kitty[/name_f], [name_f]Nancy[/name_f], [name_f]Betsy[/name_f], [name_f]Edie[/name_f], [name_f]Bonnie[/name_f], [name_f]Dora[/name_f], [name_f]Kate[/name_f], [name_f]Polly[/name_f], [name_f]Lil[/name_f], [name_f]Willa[/name_f], [name_f]Tamsin[/name_f], [name_f]Beth[/name_f], [name_f]Meg[/name_f], [name_f]Pippa[/name_f], [name_f]Susie[/name_f], [name_u]Penny[/name_u], [name_f]Cora[/name_f], [name_f]Nell[/name_f], [name_f]Flora[/name_f], [name_f]Elspeth[/name_f], [name_f]Eliza[/name_f], [name_f]May[/name_f], [name_f]Trudie[/name_f], [name_f]Nan[/name_f], [name_u]Nelly[/name_u], [name_f]Birdie[/name_f], [name_f]Bess[/name_f], [name_u]Fran[/name_u], [name_u]Connie[/name_u], [name_f]Mollie[/name_f], [name_f]Annie[/name_f], [name_f]Tansy[/name_f], [name_f]Cassie[/name_f], [name_f]Belle[/name_f], [name_f]Zuzu[/name_f], [name_u]Kit[/name_u], [name_u]Lou[/name_u], [name_f]Lottie[/name_f], [name_f]Millie[/name_f], [name_f]Holly[/name_f], [name_f]Bea[/name_f], [name_f]Evie[/name_f], [name_f]Lola[/name_f], [name_f]Lucie[/name_f], [name_f]Maisie[/name_f], [name_f]Rosie[/name_f].
I mean obviously this was up to like… 400 years ago, but it’s the basics of how they came about with a few examples.