A lot of things (fashion, music, design) go from being dated to charmingly retro /old-fashioned, I think it applies to names as well. I spend a lot of time in a French-speaking area and see toddlers boys with names like
Basile,
Léonce and
Clément , which until a few years ago would have been considered incredibly old-mannish.
Isn’t there the theory names come back once the generation beating them originally has died out?
"We have met the enemy and he is us"
Walt Kelly