Eloise (should rightly be Heloise plus an umlaut but I can't find the keyboard shortcut for that ) - nice name, especially if you like the song by The Damned.
Eleanor - I like a lot (with an aside that she'll probably be nicknamed Nora rather than Ellie because there will be tons of them in the class already - unless she gets stuck with Soapy because of the similarity to Lenor softener)
Elise - nowt wrong with it. Especially if she grows up playing piano. And doesn't mind saying 'it's Elise with ONE L, not two' all the time.
The other girl's names are going to be found in multiples in every class. There will be enough Willows in some areas to have a whole fucking forest of them.
NOBODY will pronounce Alannah correctly. Ever.
Chester. No. Molester is the most likely in high school, Chesty would be the best case scenario. Tits is also a possibility (sorry, Chester from London, I sympathised, but part of my second name rhymed with Fuck, so you were on your own, mate).
Arlo. Don't see anything wrong with it.
Finn. Common, but not that bad. Unless it's because you're a fan of Sharknado.
Marley/Marlee. Dear Lord, no. There are hundreds of them - blonde girls that remind me of dead dogs and Jennifer Aniston and boys whose Mums wanted to honour their father's ancestry/love for a big fat spliff or wanted to come across as really right on/woke/not a boring stockbroker's daughter when they got knocked up at the Reading Festival just before they graduated with a third.