I'm really not into the idea of guessing what "type" of people would choose the names, but I'll happily pass comment on the names themselves:
arthur and joseph = Arthur is great. Joseph is SO BORING.
jasmine and james = Jasmine I really dislike this name. Makes me think of Chinese Takeaway (which I love, but...)
James is a lovely name. I don't think the two go together (despite sharing the first 3 letters)
chloe and poppy = Chloe... yeah. Meh. Poppy... not really to my taste.
henry and jasmine = Henry. It's fine. Just heard it a lot. I prefer more unusual names. Jasmine: see above.
rhys and flynn = Rhys. Nope. Don't like the sound at all. Flynn I quite like actually. Although, I feel it's a little bit a case of parents thinking "Oooooh I like Finn, but it's very popular. What about Flynn???" Which puts me off.
lucy and finn = Lucy, sounds a bit like loo seat. I really like the name, but will never get over the loo seat association. My bad. Finn is ok.
elin and ellis = Don't like either, much less together. This is actually a bit weird to be honest.
kady and logan = Kady is just awful I'm afraid. NOT because it begins with a K, but because it sounds like an American trying to say Katie. Yuk. Logan is fine.
jack and ruby = Jack. Nice name. VERY OVERUSED. Ruby I quite like.
holly and luke = Holly, I really don't like. Not sure why. Luke is a bit tepid for me. Meh.
nicola and zoe = VERY dated. VERY 1980s. I think I had about 15 of each in my class in Primary.
hope and layla = Hope. Don't like virtuous names really. Layla, I like (prefer Leila) but it makes me think of Eric Clapton. Bleuurgh.
kiera = Not my taste at all.
alfie = SO TWEE. Nope. Should be Alfred, Fred as a nn.
maisie = Again, a very twee name. I really don't like given names that have the "ee" ending. It's too diminutive and... cutsie.