Can you help me brainstorm names with these requirements?

[stuffedanimalsandchocolate]

— contain 2+ different vowel sounds but start with a consonant (can end in a vowel)

— full names, not nicknames (eg Benjamin not Ben)

— Old Testament, Latin, French, Hebrew, or nature origin

— not currently wildly popular but also recognisable as a name people know and know how to spell

— for girls, fairly strong-sounding and not overly feminine/frilly

boys and girls names please, thank you so much in advance if you can help

Samuel
Matthew
Mathias

Julia
Deborah
Nadeige

Manon or Daphne - names I've been saving for my imaginary daughters!

From your boys names list Leo, Theodore/Theo and Jasper are definitely 'wildly popular' where I live. Noah used to be about 5-10 years ago but I'm not seeing it quite so much now. From your girls names I'd say Clara is pretty popular but the rest not so much.

Gosh I hadn't realised they'd become so popular, thank you

What a weirdly specific list of criteria.

Bernice
Camilla
Cecile
Corinne
Cynthia
Daria
Dinah
Flora
Jemima
Judith
Junia
Keziah
Lois
Lucia
Lydia
Marcella
Miriam
Pia
Regina
Rhoda
Sarai
Selah
Shoshana
Serena
Susanna
Vashti
Veronica
Virginia

Caesar
Cyrus
Damien
Darius
Denis
Francis
Gideon
Hiram
Jared
Jeremiah
Jorah
Josiah
Levi
Malachi
Marius
Matthias
Micah
Moses
Phineas
Remiel
Samson
Simeon
Victor

Rowan
Ashley

Heather
Laurel
Hazel
Jasmine

Oakley
Yewden
River

And some nature ones

Conan
Douglas
Fabian
Hollis
Kingsley
Laurence
Lyndon
Milo
Murray
Perry
Silas
Wesley

Bryony
Coral / Coralie
Dahlia
Juniper
Lilah
Maris
Mayim
Meadow
Sunny
Tansy
Viola
Yasmine

Sarah. Samuel

Sadie

Keziah

Love the suggestions of

Marina
Beatrix
Sylvia

Christopher
Quentin
Rowan

I would avoid Theo, Leo and Noah as they have been super popular and are starting to feel a little ‘dated’.

You can see how popular a name is with Baby name explorer.
Leo and Theo/Theodore have been very popular for about 20 years. Jasper isn't wildly popular.

Noah and Sophia/Sofia are the most popular names around. (Mohammed is the top boy's name but there's no indication that you want a Muslim name.)

Naomi or Joseph

Lois
Elodie
Rachel
Alba
Esme

Jonah
Gabriel
Joel
Malachi
Reuben

Verity
Victor
Elodie
Felicity
Imogen
Ezekiel

Have you come across this website? I love it for this kind of thing especially name origins.

https://www.behindthename.com/names/search

I am dying to run off a list to your criteria but I really ought to go to bed.

Although actually having seen your list we have very similar taste in names, so I will add some of my favourites, even though some of them break the rules

Alexander/Alex
Lars
Alfred
Merlin
Jude
Idris (my fave name ever and I wish DH had not vetoed it)
Jesse
Max (don't like any longer forms)

Astrid
Seren
Tamsin
Luna

Jonathan