Congratulations! Your children have lovely names.
I really like all of the names you’re considering, they all fit with your children’s names and have great nickname options.
Other ideas…
[name_m]Malcolm[/name_m] (Mac / Mack)
[name_m]Nicholas[/name_m] (Nick, [name_u]Nico[/name_u], Cole)
[name_u]Jasper[/name_u] (Jazz, Perry)
[name_u]Everett[/name_u] (Rhett)
[name_m]Vincent[/name_m] (Vince, Vinnie)
[name_u]Julian[/name_u] (Jules, JJ)
[name_u]Maxwell[/name_u] (Max, Wells)
[name_m]Gideon[/name_m] (Gio, Deon)
[name_m]Oscar[/name_m] (Ozzy)
[name_m]Benedict[/name_m] (Ben, [name_m]Benny[/name_m], Ned)
[name_u]Callum[/name_u] (Cal)
[name_f]Elowen[/name_f] (El, [name_f]Ella[/name_f], [name_f]Ellie[/name_f], [name_f]Winnie[/name_f], Lola)
[name_f]Eleanor[/name_f] (Nell, [name_f]El[/name_f], [name_f]Ella[/name_f], [name_f]Ellie[/name_f], [name_f]Nora[/name_f], Nori)
[name_f]Tabitha[/name_f] (Tabby)
[name_f]Matilda[/name_f] (Mattie, [name_f]Tillie[/name_f], [name_f]Tilda[/name_f], Millie)
[name_u]Antonia[/name_u] (Toni, [name_f]Annie[/name_f], [name_f]Nia[/name_f], Andie)
[name_f]Winona[/name_f] (Winnie, Nona)
[name_f]Amadea[/name_f] (Amy, Dea, Maddie)
[name_f]Alessia[/name_f] (Al, [name_u]Allie[/name_u], [name_f]Sia[/name_f], [name_f]Lia[/name_f], Lissy)
[name_f]Felicity[/name_f] (Fliss, [name_f]Flick[/name_f], Lissy)
[name_f]Helena[/name_f] (Lena, [name_f]Nell[/name_f], Nellie)