Only about 2.9 % of boys' 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 boys' first names. However, 3.8 % is just the average. Of course, the initials of boys' first names aren’t that evenly distributed, with some letters being rarer than others. In the US, the initials J and A are particularly frequent for boys' first names, while very few names begin with the letters U and X.