A lot of wealthy families really like to pass down family names so there are still a lot of classic and tradition names being used. Sometimes they use the same name over and over but each person has a unique nickname that they are known by.
[name_f]Charlotte[/name_f] - [name_f]Lottie[/name_f], [name_f]Charlene[/name_f], [name_u]Charlie[/name_u], [name_f]Cara[/name_f], [name_f]Lola[/name_f]
[name_f]Elizabeth[/name_f] - [name_f]Betty[/name_f], [name_f]Betsy[/name_f], [name_f]Liza[/name_f], [name_f]Elise[/name_f], [name_f]Beth[/name_f], [name_f]Ellie[/name_f], [name_u]Lisa[/name_u], [name_f]Bessie[/name_f], [name_f]Essie[/name_f], [name_f]Elsa[/name_f], [name_f]Ella[/name_f], [name_f]Elsie[/name_f].
[name_f]Catherine[/name_f] - [name_f]Kat[/name_f], [name_f]Kate[/name_f], [name_f]Cathy[/name_f], [name_u]Casey[/name_u], [name_f]Rina[/name_f], [name_f]Katie[/name_f], [name_f]Kathleen[/name_f], [name_u]Kay[/name_u]
You could also have the option that they have a simple classic first name and a unique trendy middle name that they go by. You can also switch that so they have a classic middle name and a trendy first name.
You can also switch genders. Usually girls are given a feminine version of their fathers traditional name.
[name_m]Alexander[/name_m] = [name_f]Alexa[/name_f], [name_u]Alexis[/name_u], [name_f]Alexandra[/name_f], [name_f]Alexia[/name_f], Aleandria, [name_f]Alexandrine[/name_f]/a.
[name_m]William[/name_m] = [name_f]Willa[/name_f], [name_f]Willow[/name_f], [name_f]Wilhelmina[/name_f]
[name_m]Philip[/name_m] = [name_f]Phillipa[/name_f], [name_f]Pippa[/name_f]
[name_m]George[/name_m] = [name_f]Georgia[/name_f], [name_f]Georgina[/name_f], [name_u]Georgie[/name_u], [name_f]Georgiana[/name_f], [name_f]Georgette[/name_f], [name_f]Georgetta[/name_f].
[name_m]Theodore[/name_m] = [name_f]Thea[/name_f], [name_f]Theadora[/name_f], [name_f]Theodosia[/name_f], [name_f]Dora[/name_f],
[name_m]Charles[/name_m] = [name_f]Charlotte[/name_f], [name_f]Charlise[/name_f], [name_f]Charlene[/name_f]
Also you can to the _____ [name_m]Jr[/name_m]. option for boys, such as [name_m]Charles[/name_m] [name_m]Jr[/name_m]. Or you can do the nickname for either gender.
[name_m]Henry[/name_m] - [name_m]Harry[/name_m], [name_f]Hattie[/name_f], [name_f]Hennie[/name_f]
[name_u]James[/name_u] - [name_u]Jamie[/name_u], [name_m]Jim[/name_m], [name_m]Jimmy[/name_m], [name_m]Jimmie[/name_m]
Surnames as first names is also a good option. A family name, or a mothers maiden name.
[name_u]Sawyer[/name_u]
[name_u]Remington[/name_u]
[name_m]Richmond[/name_m]
[name_m]Anderson[/name_m]
[name_m]Lincoln[/name_m]
[name_u]Abbott[/name_u]
[name_u]Porter[/name_u]
[name_m]Harris[/name_m]
[name_u]Campbell[/name_u]
[name_m]Nelson[/name_m]
[name_m]Beckett[/name_m]
[name_u]Sullivan[/name_u]
[name_m]Patterson[/name_m]
[name_m]Crawford[/name_m]
[name_m]Simpson[/name_m]
[name_m]Malone[/name_m]
Foreign European names are also really popual
[name_m]Peiree[/name_m]
[name_m]Gabriel[/name_m]
[name_m]Rapheal[/name_m]
[name_m]Demetri[/name_m]
[name_m]Mario[/name_m]
[name_m]Louis[/name_m]
Alphonzo
[name_u]Nicola[/name_u]
[name_f]Tamzin[/name_f]
[name_f]Paloma[/name_f]
Rapheala
[name_f]Leonie[/name_f]
[name_f]Zara[/name_f]
My last idea is the weird celebrity names stuff like [name_f]Apple[/name_f], [name_f]Suri[/name_f], [name_u]Remi[/name_u], etc…
Anyway, good luck and have fun!