Killian – aka Cillian – is a spirited yet resonant Gaelic name that was borne by several Irish saints and could make a distinctive replacement for the dated Kelly. Kylian is another spelling that's gaining traction, thanks to French soccer star Kylian Mbappé. Possible downsides: an unsavory first syllable and a connection to the trendy brew.

Damon is a name with a strong, pleasing aura (much like the persona of Matt D.) and extremely positive ancient associations. From the classical myth, Damon and Pythias have become symbols of true friendship, as Damon risked his life to save his friend from execution. And Damon of Athens was the fifth century philosopher who taught both Pericles and Socrates.