I love [name_f]Rio[/name_f], [name_m]Kit[/name_m], and [name_m]Coby[/name_m] from your list!
other suggestions, sorry I know some are a bit longer:
[name_f]Poet[/name_f]
[name_f]Story[/name_f]
[name_f]Alouette[/name_f]
[name_f]Daffodil[/name_f]
[name_f]Ivy[/name_f]
[name_f]Ayla[/name_f]
[name_f]Eira[/name_f]
[name_f]Nell[/name_f]
[name_f]Niamh[/name_f] / [name_f]Neve[/name_f]
[name_f]Lux[/name_f]
[name_f]Faye[/name_f]
[name_f]Phaedra[/name_f]
[name_f]Ziva[/name_f]
[name_f]Lark[/name_f]
[name_f]Rue[/name_f]
[name_m]Roshan[/name_m]
[name_f]Fawn[/name_f]
[name_f]Felicity[/name_f]
[name_f]Agatha[/name_f] / [name_f]Agacia[/name_f]
[name_m]Kota[/name_m]
[name_f]Gita[/name_f] / [name_f]Geeta[/name_f]
[name_m]Tate[/name_m]
[name_f]Kiki[/name_f]
[name_f]Allegra[/name_f] (means “joyous” and is also close to a musical term)
[name_f]Lettie[/name_f]
[name_f]Leda[/name_f]