I'd like set one better if it were spelt
Alistair or
Alastair. The names work together, I think.
Jono looks like a typo for
Juno. I'm not crazy about it, but if it's a nn or whatever, I guess it's fine. I've never been one for sibsets with names of the same length, so having three four-letter names in a set is nms. I guess they feel similar though, so they work.