Finals

Girls - Juliet, Amy ad Alexandra
Boys- Aaron, Isaac, Rory and Rueben

Esther - nice
Marianne - not keen
Louisa - lovely
Martha - ok
Ava - dislike
Eva - dislike
Frances - nice
Juliet - nice but I don't like Jules
Lillian - no, Lily is nicer
Amy - ok but was overpopular a couple of decades ago
Alexandra (would use Ally as nn) - nice
Charlotte ( this is our fave but I like to use nicknames but I hate chat or lottie. Don't mind Charley but wouldn't go mad for it. Any other suggestions?) - nice. I know on who gets called Charl (Sharl)

Oliver - nice but not keen on Olly
Aaron - ok
Isaac - ok
Matthew - like, Matt is good too
Francis - ok
Connor - overpopular about 20 yrs ago
Reuben - no
Rory - nice but not if you can't say R

I'd go with Matthew and Charlotte

Amy is lovely. As are Reuben and Rory.

Girls - I like Louisa, Martha and Charlotte
Boys - I like Matthew and Rory

Esther - okay
Marianne - dislike, seems old fashioned
Louisa - really love this
Martha - really like this as well
Ava - okay
Eva - like this
Frances - really dislike this, I think it sounds plain and old-fashioned
Juliet - really like this
Lillian - prefer Lily but I think it's okay
Amy - really like
Alexandra - like this
Charlotte - like this

Oliver - I really like this
Aaron - okay
Isaac - not a fan, I just don't like how it sounds
Matthew - dislike
Francis - dislike
Connor - I really like this
Reuben - like it
Rory - like

Overall I really like your names OP, my favourites would have to be Louisa and Connor but I think all of them are good names

Girls

Esther - Really like it. Traditional, but doesn't put me in mind of old ladies.
Marianne - Not a fan. Can't put my finger on it.
Louisa - Nice name. Not among my favourites on your list though.
Martha - Nope. Old lady name. Not for babies.
Ava - It's ok. I know popularity doesn't bother, you, but it's a little too popular for me.
Eva - Classic verging on timeless. One of my favourites on the list.
Frances - Nope. Old lady, and I've never met one I've liked.
Juliet - Eeeeeehhh. Not great. I think it's
Lillian - Don't like it. Lily is much better.
Amy - Very nice name. Second favourite name on your list.
Alexandra - (would use Ally as nn) Nice name. Just not the best. Alex will still come up
Charlotte - Best name on the list. I'm entirely with you on hating Lottie as a NN, but I think Char might come up often. Charley/Charlie is A-OK.

Fav girl name is Amy. I just love how classic it is.

As you’ve said you’re not bothered about popularity, Oliver is one of my very fav boys name. I really love Isaac too and Connor