I love Angharad! I live in [name]Wales[/name] so it’s fairly common here and doesn’t seem “out there” to me at all. I have a friend Angharad who goes by [name]Annie[/name] too really cute.
The ones I like off your popular list for girls are [name]Sophie[/name], [name]Phoebe[/name] and [name]Imogen[/name] and I’d say if you love them enough, popularity won’t matter. I always try to find less common names, but [name]Phoebe[/name] is one name I would use no matter its popularity (unless it was maybe top 3!).
Off your uncommon list I obviously love Angharad, I also like [name]Charmian[/name] (I think the girl who played [name]Liesl[/name] in The Sound of [name]Music[/name] is [name]Charmian[/name]), and Agnetha - although I probably prefer [name]Agatha[/name] but they’re both nice.
I think if you had a [name]Sophie[/name] and an Agnetha it might seem strange, but you could get away with a [name]Charmian[/name] and and [name]Imogen[/name].
Of the boys popular names I pretty much like them all but I love [name]Daniel[/name], [name]William[/name] and [name]Harry[/name] and again, would consider them regardless of popularity. On he uncommon list I like [name]Ferdinand[/name] but have you considered [name]Fergus[/name], [name]Ferguson[/name] or [name]Frasier[/name]?
Is [name]Dara[/name] on your boys name? Because I find it to sound quite feminine. And [name]Deryn[/name], is that on your girls list? Because it’s Welsh for bird and is generally considered masculine, and sounds it to me. Maybe because it reminds me of [name]Darren[/name]?
Anyway hope that helped, you have some great choices!