Welsh
unisex names.

Welsh names favor consonant clusters that look intimidating but follow consistent rules — ll = a hissed L, dd = a soft 'th'. Many encode meaning openly (Gwen = white, Rhys = ardor).

Within the Welsh unisex side specifically, Morgan, Lynn, and Reese are the most-used in the U.S. record — a useful three-point sense of the register, since the rest of the list mostly varies between rarer literary, religious, and modern coinages.

This page shows 3 Welsh unisex names sorted by U.S. SSA totals — so the most-given names sit at the top and the rarer entries toward the bottom.