aedunn2's list "Boys' List" of 3 great name ideas: Dennis - Crosby!

Boys' List

Although it has come to sound Irish, Dennis is one of the most widely-used <a href="https://nameberry.com/baby-names/162/french-names">French names</a> (St. Denis is the patron saint of France) and harks back even further to Dionysius, the Greek god of wine and debauchery. It was introduced to England by the Normans.
 Dennis was considered cool when it was near the top of the charts in the 1940s and 1950s, but has been slipping ever since, thanks in part to the devilish Dennis the Menace.
 Dennis Barlow is the main character in Evelyn Waugh's satirical 1948 novel The Loved One. Some prominent namesakes also include Dennis Hopper, Dennis Rodman, Dennis Quaid, Dennis Leary and Dennis Wilson. Denis is a secondary spelling.

Dennis

Where have all the Freds gone? We haven't seen many since the days of Flintstone and Munster. But it could be time for a comeback--if you think more of the sophistication of Fred Astaire, and of other nice guy names like Jack and Charlie and Sam.
 Fred dropped off the popularity list in 2002, after being a double-digit favorite until 1955. Fred Weasley is a Harry Potter character, and there have been TV character Freds on Mad Men and Hot in Cleveland.

Fred

Crosby is an attractively laid-back Irish surname with retro musical associations to Bing and Crosby, Stills, and Nash, and with a jaunty air. Crosby Braverman was the name of a character on the TV show Parenthood, played by Dax Shepard.
 Crosby entered the Top 1000 list for the first time in 2011.