gelast
One who tends to laugh; a laugher.
literary, rare
Even if we grant that the "gelasts" are getting reduced to the dimensions of a petty sect, the consideration need not deter us from choosing laughter as our theme.
Where it comes from
From Ancient Greek γελαστής (gelastḗs, “laugher”).
Adapted from the Wiktionary entry gelast (CC BY-SA 4.0).