[name_m]Hi[/name_m] there.
Here are my thoughts on your list-
Alistair/Ace-I love it. [name_m]Alistair[/name_m] is charming & quirky & [name_u]Ace[/name_u] is just friendly & sporty & witty & adorable. Simple but unique. Goes quite nicely w/your crew as well.
Caleb/Cal-I love [name_u]Cal[/name_u] in general & w/your kids’ names. [name_m]Caleb[/name_m] doesn’t feel super special though. I prefer [name_m]Calum[/name_m]. [name_m]Calvin[/name_m] is nice too. [name_u]Or[/name_u] [name_u]Charles[/name_u] nn [name_u]Cal[/name_u] is fun.
Keanu-Kind of cool, but kind of really associated w/the actor. And he’s fine. [name_m]Just[/name_m] feels like a strong association to me. And way different style then [name_f]Emilia[/name_f], [name_f]Savannah[/name_f] & [name_m]Theodore[/name_m].
Ender-I never cared much for this, but I met one recently in real life & now I kind of like it. It’s different but easy. Maybe kind of close to [name_m]Ted[/name_m]?
Lucius/Luc-I think that this fits in pretty well. I love [name_m]Luc[/name_m], but [name_m]Lucius[/name_m] is too close to [name_m]Lucifer[/name_m] for me. And it’s really not that close…and I like Lucy…so, this is irrational.
Magnus/Gus-Super handsome & perfect perfect w/your kids’ names.
Maguire/Mack-I really like [name_u]Mack[/name_u] w/your kids’ names. Not sure about [name_u]Maguire[/name_u] as a fn though. I prefer [name_u]Mackenzie[/name_u], [name_u]Maverick[/name_u], [name_m]Malachy[/name_m] or [name_m]Malcolm[/name_m].
Memphis-I don’t hate it, but it’s not my cup of tea. Kind of okay w/your crew; not a perfect fit. Kind of nick-name-less.
Orion/Ry-That’s fairly interesting & not a bad fit.
Perseus/Percy-That’s interesting…I don’t mind it. I think I like [name_m]Percival[/name_m] more.
Thelonius-Hm, I don’t know. Kind of too close to [name_m]Theodore[/name_m] anyway.
Xavier/Zav-I don’t know. I don’t dislike [name_m]Xavier[/name_m], but the pronunciation is always tricky to me.
Zacharias/Zac-Love [name_m]Zac[/name_m] for you. [name_m]Zacharias[/name_m] is kind of neat. I prefer [name_m]Zacceus[/name_m].
Zaeed-Hm. That looks a little awkward. Can’t get into it.
Zephyr/Zeph/Zep-I think I like Zep! [name_u]Zephyr[/name_u] is a name I just can’t get into. [name_m]Just[/name_m] don’t like the sound for some reason.
[name_f]Hope[/name_f] my rambling helps.