[name_m]Hi[/name_m] there.
This is sort of tough, because I feel like [name_m]Henry[/name_m] & [name_u]Indiana[/name_u] are such different worlds. [name_u]Harper[/name_u] is actually sort of a middle ground for them though style wise. By the way, I love [name_m]Hank[/name_m]!
Here are some suggestions for a possible #4:
Boys-
[name_m]Archer[/name_m]/[name_m]Archie[/name_m]/[name_m]Ace[/name_m]
[name_u]Asa[/name_u]/[name_m]Ace[/name_m]
[name_m]Arrow[/name_m]/[name_m]Ace[/name_m]
[name_m]Atticus[/name_m]/[name_f]Atty[/name_f]/[name_m]Ace[/name_m]/[name_u]Kit[/name_u]
[name_u]August[/name_u]/[name_m]Ace[/name_m]/[name_m]Augie[/name_m]
[name_m]Abel[/name_m]/[name_m]Abe[/name_m]
[name_m]Abraham[/name_m]/[name_m]Abe[/name_m]/[name_m]Bram[/name_m]
[name_m]Basil[/name_m]/Bash
[name_m]Beckett[/name_m]/[name_u]Kit[/name_u]
[name_m]Caspar[/name_m]/[name_m]Cas[/name_m]/Caspi
[name_m]Dashiell[/name_m]/[name_u]Dash[/name_u]
[name_u]Dexter[/name_u]/[name_m]Dex[/name_m]
[name_u]Elias[/name_u]/[name_m]Eli[/name_m]
[name_m]Finnegan[/name_m]/[name_u]Finn[/name_u]
[name_m]Ivan[/name_m]/[name_m]Ives[/name_m]
[name_m]Jasper[/name_m]/Jass
[name_m]Jeremiah[/name_m]/[name_u]Jem[/name_u]
[name_m]Rafferty[/name_m]/[name_u]Rafe[/name_u]
[name_m]Silas[/name_m]/[name_u]Si[/name_u]
[name_m]Thatcher[/name_m]/[name_m]Thatch[/name_m]/Thax
[name_m]Thackeray[/name_m]/[name_m]Thatch[/name_m]/Thax
Girls-
[name_f]Georgia[/name_f]/[name_u]Georgie[/name_u]/[name_f]Gigi[/name_f]
[name_f]Imogen[/name_f]/[name_f]Imee[/name_f]/Idgie
[name_u]Juniper[/name_u]/[name_f]Juno[/name_f]/[name_u]June[/name_u]/[name_f]Junie[/name_f]
[name_f]Louisa[/name_f]/[name_f]Lola[/name_f]
[name_f]Lorelei[/name_f]/[name_f]Lola[/name_f]
[name_f]Penelope[/name_f]/[name_u]Penny[/name_u]
[name_f]Scarlet[/name_f]/[name_u]Scout[/name_u]
[name_f]Susanna[/name_f]/[name_u]Scout[/name_u]
[name_f]Tallula[/name_f]/[name_f]Tula[/name_f]
[name_f]Hope[/name_f] this helps.