What are the 13 most popular initials?

The 13 most popular initials often vary by region and cultural context, but commonly recognized initials in the English-speaking world include A, J, M, S, T, C, R, K, B, D, L, H, and P. These letters frequently appear at the beginning of common names, such as Alexander, James, Michael, Sarah, and others. Popularity can also be influenced by naming trends, historical figures, and pop culture references.