Hi there.
Magnus is my husband’s favorite name. Fun to see actually used in real life!
Anyway, here are my thoughts for #3:
Lucas / [name_m]Lucius[/name_m] / [name_u]Luca[/name_u]-I feel like [name_m]Lucius[/name_m] fits really well w/Ariana & [name_m]Magnus[/name_m]. And I love [name_m]Luc[/name_m] spelled this way as a nn. I don’t think that [name_m]Luke[/name_m]/Luc is that popular. Probably about as much as [name_u]Max[/name_u] at most. [name_m]Lucas[/name_m] is pretty popular though, & not nearly as interesting as [name_m]Lucius[/name_m] in my opinion. I actually love [name_u]Luca[/name_u] the most, but it’s so short on its own that it seems weird to use a nn.
Caspian-Ooh, I love this w/your crew (another one of my husband’s favorites, actually.) It’s so handsome & strong but a little bit mystical. Simple & known enough but not at all popular. And it kind of has that bold romantic vibe that I get from [name_f]Ariana[/name_f] & [name_m]Magnus[/name_m]. Plus, the nns [name_m]Cas[/name_m] & Caspi are easy & adorable. [name_m]Caspian[/name_m] [name_m]Leo[/name_m] is perfect.
Rowan-I really like it, & I think that you can do the nn [name_u]Win[/name_u] here. This name falls under that category of rugged outdoorsy boys that have a gentle soul. I really like [name_m]Aurelius[/name_m] in general. Maybe just not w/Rowan for some reason. They give me different vibes.
Atticus-I like it. It’s smart & vintage & a little quirky. I’m wondering if it’s a little bit close to [name_m]Magnus[/name_m]. [name_m]Just[/name_m] because they both have the nn of [name_u]Gus[/name_u]. You could also do the nn [name_m]Ace[/name_m]? [name_m]Atticus[/name_m] [name_m]Elijah[/name_m] is handsome.
Felix / [name_u]Phoenix[/name_u]-These are both a bit nick-name-less, but [name_u]Phoenix[/name_u] is so cool. I don’t like [name_m]Felix[/name_m] as much. It just sounds a little weak or something. [name_u]Phoenix[/name_u] is maybe too much as a fn. Maybe I’m just not brave enough.
Victor-It’s an interesting one that you don’t see a lot. I’m not sure that I love the sound of it personally, but it’s not an awful name.
Atlas-I really like the one. You could also do the nn [name_m]Ace[/name_m] here. [name_f]Atty[/name_f] is kind of cute too, but maybe too close to [name_u]Ari[/name_u]. [name_u]Atlas[/name_u] is like a fresher version of [name_m]Atticus[/name_m].
Here are a few more ideas that you may like:
August
Bastian
Basil
Cassius
Caius
Dashiell
Eben
Esben
Espen
Finnian
Finnegan
Ignatius
Ivan
Julius
Nicolas
Rafael
River
Soren
Sebastian
Thaddeus
Tristan
Hope this helps. 