I like all three of your shortlist names to a certain extent and can see the appeal of all three, but [name]Samantha[/name] is feeling a little stale to me at the moment because there are so many in my generation (twenties).
[name]Arianna[/name] is lovely. Delicate, pretty, feminine and very current. I like it a lot although I prefer the stronger and more timeless feel of [name]Ariane[/name] personally. I’d pair [name]Arianna[/name] with a solid, classic middle for example; [name]Arianna[/name] [name]Margaret[/name], [name]Arianna[/name] [name]Beatrice[/name], [name]Arianna[/name] [name]Catherine[/name], [name]Arianna[/name] [name]Frances[/name], [name]Arianna[/name] [name]Claire[/name], [name]Arianna[/name] [name]June[/name] or [name]Arianna[/name] [name]Charlotte[/name].
[name]Natalie[/name] is my personal favourite of your three names. It reminds me of [name]Natalie[/name] [name]Wood[/name] and feels timeless, classic and a little glam to me but very approachable. I’d either team [name]Natalie[/name] with a vintage or classic middle such as; [name]Natalie[/name] [name]Grace[/name], [name]Natalie[/name] [name]May[/name], [name]Natalie[/name] [name]Pearl[/name], [name]Natalie[/name] [name]June[/name], [name]Natalie[/name] [name]Louise[/name], [name]Natalie[/name] [name]Faye[/name], [name]Natalie[/name] [name]Martha[/name], [name]Natalie[/name] [name]Georgia[/name] or [name]Natalie[/name] [name]Anna[/name]. I also really adore the slightly more modern feel of [name]Natalia[/name] if you like that at all? It’s a bit of a compromise between [name]Arianna[/name] and [name]Natalie[/name] and gives you the lovely nn [name]Talia[/name].