Hello and congratulations
Love all your boy choices - probably Guy, Jesse and Kit in that order, though Kit only as a nn for Christopher/Kester.
Other thoughts - Rory, Blaise, Beau, Art as nn for Arthur, Milo, Jethro, Nat/e as nn for Nathaniel, Jerome
For girls I also love Clara
Don’t like Fleur - sounds like Bluuurgh - only works in a French accent I think
Drew I just think is a boys name and not a very distinguished one at that
Other thoughts - Cassia, Lois, Jasmine, Ines, Robin, Cleo, Frances, Lara, Serena, Seren, Ffion, Linos