my list needs some help

We just found out we are expecting #3 and I am ready to start searching for the perfect baby name. We have 2 boys, [name]Dash[/name] [name]Harrison[/name] and [name]Mack[/name] [name]Vincent[/name] and I am looking for a name that fits in with them! Short (or with a short nn), different but easy to say and spell are really my only criteria. any ideas? middle name will likely be [name]Indiana[/name] or [name]Indigo[/name]. some names that I am liking right now… opinions and suggestions please!

[name]Declan[/name] ([name]Dex[/name]) -too close to [name]Dash[/name]?
[name]Callum[/name] ([name]Cal[/name])
[name]Campbell[/name] ([name]Cam[/name])

Thank You!

I really like [name]Declan[/name], nn [name]Dex[/name], but [name]Dex[/name] is too similar to [name]Dash[/name]. My next vote would be [name]Callum[/name].

[name]Hi[/name] actually love [name]Dex[/name]…[name]Dex[/name] and [name]Dash[/name] is super cute.