What names can you suggest based on my style that sound cohesive with [name_m]Grant[/name_m]:
[name_f]Clara[/name_f] meaning clear , bright, famous
[name_f]Claire[/name_f] meaning clear, light or bright
[name_f]Alice[/name_f] meaning noble
[name_f]Faith[/name_f] meaning trust and devotion
[name_f]Linda[/name_f] meaning pretty
[name_f]Hannah[/name_f] meaning favor or grace
Brothers:
[name_u]Ellis[/name_u] “benevolent” (and probably the best pairing with [name_m]Grant[/name_m] of this list IMO)
[name_m]Nathaniel[/name_m] “gift of God”
[name_m]Adam[/name_m] “made/son of earth”
[name_m]Griffith[/name_m] “strong lord” (unsure how you feel about alliteration with Grant)
[name_m]Gerard[/name_m] “spear strength”
[name_m]Irving[/name_m] “green river / sea friend”
Sisters:
[name_f]Ila[/name_f] “from the island”
[name_f]Giselle[/name_f] “pledge”
[name_f]Janine[/name_f] “God is gracious”
[name_f]Krista[/name_f] which is derived from [name_f]Christine[/name_f]
[name_f]Hope[/name_f] these help 
[name_m]Clark[/name_m]
[name_m]Morris[/name_m]
[name_u]Perry[/name_u]
[name_u]Amos[/name_u]
[name_u]Dean[/name_u]
[name_u]Rhys[/name_u]
[name_u]Ezra[/name_u]
[name_f]Lila[/name_f]
[name_f]Dinah[/name_f]
[name_f]Iris[/name_f]
[name_f]Flora[/name_f]
[name_u]Ruby[/name_u]
[name_f]Vera[/name_f]
[name_f]Olive[/name_f]
[name_u]Laurence[/name_u]
[name_m]Hank[/name_m]
[name_m]Ethan[/name_m]
[name_u]Hayes[/name_u]
[name_m]Paul[/name_m]
[name_f]Sadie[/name_f]
[name_u]June[/name_u]
[name_f]Faith[/name_f]
[name_f]Vera[/name_f]
[name_f]Kate[/name_f]
[name_f]Gloria[/name_f] (glory)
[name_f]Grace[/name_f] (generosity)
[name_u]Vivian[/name_u] (lively)
[name_f]Celia[/name_f] (heavenly)
[name_u]Hazel[/name_u] (type of tree)
[name_f]Helen[/name_f] (torch light)
[name_f]Irene[/name_f] (peace)
[name_f]Willa[/name_f] (helmet, protection)
[name_f]Lucy[/name_f] (light)
[name_u]Marie[/name_u] (star of the sea)
[name_u]Micah[/name_u] (who is like god)
[name_u]Henry[/name_u] (house ruler)
[name_m]Damien[/name_m] (to tame, subdue)
[name_m]Emile[/name_m] (rival)
[name_m]Ivor[/name_m] (archer, bowman)
[name_u]James[/name_u] (supplanter)
[name_m]Victor[/name_m] (winner)
[name_m]Grant[/name_m] and…
[name_m]Luke[/name_m]
[name_m]Oskar[/name_m]
[name_u]Leon[/name_u]
[name_u]Toby[/name_u]
[name_u]Drew[/name_u]
[name_m]Alec[/name_m]
[name_f]Faye[/name_f]
[name_f]Eve[/name_f]
[name_f]Vita[/name_f]
[name_f]Freda[/name_f]
[name_u]June[/name_u]
[name_f]Lois[/name_f]
[name_f]Enid[/name_f]
[name_f]Eleanor[/name_f]
[name_f]Joy[/name_f]
[name_f]Lucy[/name_f]
[name_f]Mae[/name_f]
[name_u]Marie[/name_u]
[name_f]Molly[/name_f]
[name_u]Arthur[/name_u]
[name_u]Lincoln[/name_u]
[name_m]Myles[/name_m]
[name_u]Owen[/name_u]
[name_m]Warren[/name_m]
Nolan “champion”
Jude “praised”
Bennett “blessed”
Elliot
Reid
Morgan
Isaac “laughter”
Davis “beloved”
Duncan
Malcolm
Nathaniel “gift of god”
Maxwell
August “great”
Alice “noble”
Audrey “noble”
Miranda " wonderful, admirable"
Catherine “pure”
Harriet
Simone
Hallie “dweller at the meadow”
Violet
Lydia
Tessa
Natalie
Vivian
Eliza
Caroline
[name_m]Clark[/name_m] meaning scribe or scholar
[name_m]Hugh[/name_m] meaning mind, intellect
[name_u]James[/name_u] meaning supplanter
[name_u]William[/name_u] meaning resolute protection
[name_u]Joseph[/name_u] meaning Jehovah increases
[name_m]Adam[/name_m] meaning son of the red earth
[name_m]Luke[/name_m] meaning man from Lucania
[name_m]Albert[/name_m] meaning wise counselor; elf counsel
[name_m]Harold[/name_m] meaning army ruler
[name_m]Graham[/name_m] meaning gravelly homestead
[name_f]Ethel[/name_f] meaning noble maiden
[name_f]Minnie[/name_f] meaning mind, intellect
[name_f]Constance[/name_f] meaning steadfastness
[name_f]Maude[/name_f] meaning battle mighty
[name_f]Miriam[/name_f] meaning drop of the sea of beloved
[name_f]Ruth[/name_f] meaning compassionate friend
[name_f]Lydia[/name_f] meaning woman from [name_f]Lydia[/name_f]
[name_u]Evelyn[/name_u] meaning desired, water or island
[name_f]Alice[/name_f] meaning noble
Some of these have nickname potential but doubt anyone will notice, good luck finding the perfect names :]
Boys:
[name_m]Winston[/name_m]
[name_u]Lawrence[/name_u]
[name_u]Pierce[/name_u]
[name_u]Dean[/name_u]
[name_u]Jack[/name_u]
[name_m]Thatcher[/name_m]
[name_m]Wilford[/name_m]
[name_u]August[/name_u]
[name_m]Ernest[/name_m]
[name_u]Ellis[/name_u]
[name_u]Reid[/name_u]
[name_m]Harvey[/name_m]
Girls:
[name_f]Etta[/name_f]
[name_f]Margot[/name_f]
[name_f]Eloise[/name_f]
[name_f]Rosemary[/name_f]
[name_f]Luella[/name_f]
[name_f]Ada[/name_f]
[name_f]Maude[/name_f]
[name_f]Nelle[/name_f]
[name_f]Winnie[/name_f]
[name_f]Hattie[/name_f]
[name_u]Alma[/name_u]
[name_f]Edith[/name_f]