Alright, back to the drawing board. The names I have so far are [name_m]Grant[/name_m], [name_f]Inga[/name_f], and [name_f]Anya[/name_f].
I’m between [name_m]Clark[/name_m] and [name_m]Ivo[/name_m] for the last boy name. Also looking at variations of [name_m]Nicholas[/name_m], like [name_m]Nilo[/name_m], Claas, or Nilus. Really like [name_m]Ivo[/name_m], but might be too many vowels/ uncommon names. Help!
How are you pronouncing [name_m]Ivo[/name_m]?
Probably Eye-voh, the Anglicized way. Also why I’m not spelling [name_f]Anya[/name_f] like [name_f]Aine[/name_f].
Also am really looking at Eivor. Too Scandi? [name_f]My[/name_f] husband is just a little bit, not a ton.
My personal favourite is [name_m]Ivo[/name_m], I absolutely love it! So simple but impactful.
However, [name_m]Clark[/name_m] is super handsome too and I think goes a little better with [name_m]Grant[/name_m], who would otherwise feel like a little bit of an outlier. [name_m]Nilo[/name_m] and Nilus are really interesting too.
Maybe [name_u]Nico[/name_u]? [name_u]Or[/name_u] [name_m]Niles[/name_m] or [name_m]Nils[/name_m] for the Scandi side? [name_u]Or[/name_u] [name_m]Ivan[/name_m], which feels like a great bridge name between upright [name_m]Grant[/name_m], international [name_f]Anya[/name_f] and Scandi-chic [name_f]Inga[/name_f].
With [name_m]Grant[/name_m], [name_f]Anya[/name_f] and [name_f]Inga[/name_f], I think [name_m]Cole[/name_m], [name_u]Nico[/name_u] & [name_m]Nils[/name_m] would great. From your list, I also like [name_m]Clark[/name_m] (which fits with [name_m]Grant[/name_m] well), [name_m]Ivo[/name_m] and [name_m]Nilo[/name_m].
It’s a cool sibset! Spunky and quirky vibes. I like [name_m]Ivo[/name_m] with them 
I think [name_m]Ivo[/name_m] goes with [name_f]Inga[/name_f] and [name_f]Anya[/name_f] better than [name_m]Clark[/name_m], but [name_m]Clark[/name_m] goes better with [name_m]Grant[/name_m].
Inga & [name_f]Anya[/name_f] together are stunning 
[name_m]Ivo[/name_m] goes nicely with them & [name_m]Grant[/name_m]! I prefer it to [name_m]Clark[/name_m]. [name_f]My[/name_f] favorite though is probably [name_m]Nilo[/name_m], which is just as quirky and fun as [name_f]Inga[/name_f] and [name_f]Anya[/name_f]! [name_u]Love[/name_u] the suggestion of [name_u]Nico[/name_u] & [name_m]Nils[/name_m] too!
Ivo goes better w/Inga and [name_f]Anya[/name_f] - [name_m]Clark[/name_m] goes better w/Grant. Up to you whether you’d rather a majority comport w/one another or you’d rather them go by gender.