It would get a lot of annoying comments and I wouldn’t do it (too matchy, even though they’re actually stylistically quite different). But it’s whether you and they as kids and adults (on the occasion you mention siblings’ names) would be OK with some teasing - eg “is there a dog, Harley?”.
What about Charles nn Charlie or better:
Arlo
Archie (or Arthur / Archer nn Archie)
Leo
Toby
Rory
Callum
Calvin
Harry
Henry
Harvey
Jack
Theo
Edit: one of my friends has siblings with the fem and masc version of the same name. It did always get comments when she said their names but they are happy adults with their own lives - they made it through OK! So def not a terrible thing by any stretch. They’re both good names. Just not my preference to use both.