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Something like Quinn Nerrin would not be ideal, but I don't think it's a deal breaker.
The only 2 people I have come across named Eden were both boys. I think a fine name for a boy. As far as I know they have no problems with their names.
I think Lily-Robyn sounds nice.
Arlow looks like Arlo misspelled, I would see it as a boy's name.
Suggestions: Arrow, Artio, Callisto, Cleo, Willow, Aria, Harmony, Armelle
Caitlin - Cate looks fine to me
Eleanor - nicknames could be Leni, Nori, Lani, Nell, Nella, Nellie, Leah
Isobel - I would worry about the nickname spelling as it is easily changeable
Lauren - I don't think of it as a mums name, nicknames could be Ren, Renna, Rennie, Leni, Lala, Polo
Lucy - could be nickname for Lucille, Lucinda, Lucienne, Lucretia, Lucia, Louisa
Naomi - I like the nickname Nomi
Same as Isabel
Alec, Devon, Eric, Jared, Rory, Patrick, Kai, Theodore, Pierce, Jasper, Troy
I wouldn't have pronounced right the first time, but if that spelling is significant to you it's probably worth while to correct people.
I prefer Lachlan, but Lachten not terrible, and probably a good choice if it's the name important to you.