Only about 2.3 % of all first names in the United States begin with the letter H…
This means that the initial H is represented below average: According to this, each letter (given 26 letters in the alphabet) would appear as an initial in about 3.8 % of all names. Of course, first letters aren’t (exactly) evenly distributed as initials: On the contrary, some initials are especially common, while others are really rare. The most common initials in the United States are A and J, while fewer first names begin with the letters U and X.