I’m assuming you live in the Uk -
Boys:
Remy - only for a 55 year old
Pierre - it’s too HELLO I’M FRENCH
Joseph - nice
Auguste - ok, Augustus is nicer
Emile - no, too close to girls’ names like Emily
Armand - no, sounds like a nut or a liqueur
Edgar - nice
Mayeul - no, too complex
How about - Laurent, Alexander, Sebastian, Lucian, Raphael, Justin, Julian nn Jules, Christophe, Frederic, Louis, Leon, Theodore, Dominic, Lucas, Marc, Maxim
Girls:
Iris - nice
Leonie - nice
Beatrice nice
Octavie/Octavia - former wouldn’t work in Uk
Adelaide - nice
Blanche - ok
Garance - too complex
Otherwise - Elisabeth, Sophie, Eloise, Isabelle, Catherine, Lucienne, Claire, Clementine, Josephine, Charlotte, Jeanne, Cecile, Ines, Louise, Madeleine, Sylvie, Zoe. Also Breton names like Catrin and Manon