My daughter is [name]Teagan[/name], son is [name]Kade[/name]. I would like to stay with something not too popular, but not too out there.
So far:
Girls
[name]Gemma[/name]
[name]Brenna[/name]
[name]Kellen[/name]
[name]Ainsley[/name]
[name]Rory[/name]
[name]Greta[/name]
[name]Maeve[/name]
[name]Laine[/name]
[name]Bryn[/name] / [name]Brynn[/name]
Boys
[name]Reed[/name]
[name]Leo[/name]
[name]Gareth[/name]
[name]Rowan[/name]
[name]Lane[/name]
[name]Blaise[/name]
[name]Keane[/name]
[name]Gemma[/name]: I think the Italian [name]Gemma[/name] is really pretty, and a fresh alternative to [name]Jenna[/name]. I like it with your kids’ names. 
[name]Brenna[/name]: This one feels kind of, well, not very classy to me, and really trendy. What about [name]Bryn[/name] or the Irish [name]Bronwyn[/name], which I think works really well with the Irish [name]Teagan[/name].
[name]Kellen[/name]: [name]Kellan[/name] is a boys’ name for me, but I do think it works with your kids’ names.
[name]Ainsley[/name]: This one feels too trendy to me, and unfortunately reminds me of the word “anus.” (But that’s just me…)
[name]Rory[/name]: I think [name]Rory[/name] is really spunky, and I really like it with [name]Teagan[/name] and [name]Kade[/name].
[name]Greta[/name]: I love [name]Greta[/name], but for me, it’s style doesn’t work with [name]Teagan[/name] or [name]Kade[/name].
[name]Maeve[/name]: I love the Irish [name]Mave[/name], and while it’s not trendy, I do think it works in your mix. Wait. I think that with the long A, it’s too close to [name]Kade[/name].
[name]Laine[/name]: I think [name]Lane[/name] definitely works. Wait. It’s the long A issue again with [name]Kade[/name].
[name]Bryn[/name] / [name]Brynn[/name]: I think [name]Bryn[/name] would be a great choice, too.
[name]Reed[/name]: I think [name]Reed[/name] is really handsome, and like it with your kids’ names. Wait. With only one syllable and a d at the end, I think it’s too close to [name]Kade[/name].
[name]Leo[/name]: I [name]LOVE[/name] [name]Leo[/name], but for me, the classic [name]Leo[/name] doesn’t work with your kids’ names. What about [name]Liam[/name] or [name]Leland[/name]?
[name]Gareth[/name]: I’m personally not a [name]Gareth[/name] fan (it sounds like I’m speaking with a lisp), but I think it works…
[name]Rowan[/name]: I think [name]Rowan[/name] definitely works here…
[name]Lane[/name]: I know it’s unisex, but [name]Lane[/name] feels really feminine to me. (Also, with the long A, it’s a lot like [name]Kade[/name].) Hmm…
[name]Blaise[/name]: [name]Blaise[/name] honestly reminds me of a troubled teenager with a mullet who plays football and spends his free time failing out of high school and crushing beer cans against his skull. 
[name]Keane[/name]: I think [name]Kean[/name] and [name]Kade[/name] are too matchy, but it’s the right style.
Good luck!
[name]Love[/name]
[name]Gemma[/name]
[name]Brenna[/name]
[name]Ainsley[/name]
[name]Rory[/name]
[name]Bryn[/name] / [name]Brynn[/name]
[name]Love[/name] Boys
[name]Reed[/name]
[name]Rowan[/name]
[name]Lane[/name]
[name]Keane[/name]
I love the name [name]Keane[/name], but I think it is too close to [name]Kade[/name]. Good luck!
I am bias towards [name]Brenna[/name] b/c my daughter’s name is [name]Brenna[/name] [name]Grace[/name]!!
From your lists my favorites are [name]Brynn[/name] or [name]Rory[/name] for a girl and [name]Rowan[/name] or [name]Lane[/name] for a boy.
[name]Teagan[/name], [name]Kade[/name], & [name]Rory[/name].
[name]Teagan[/name], [name]Kade[/name], & [name]Brynn[/name].
[name]Teagan[/name], [name]Kade[/name], & Roawn.
[name]Teagan[/name], [name]Kade[/name], & [name]Lane[/name].
All have a good flow. If I had to pick one of each I’d say [name]Rory[/name] or [name]Rowan[/name]. For some reason I am drawn to the “R” names when matched with the other two!
Best of luck!