I was born with my widow's peak. If you look at Leonardo Dicaprio, as he's aged, his "widow peak" has gotten more severe as mine has. You're the first person I've encountered who took issue with me describing my hair as a "widow's peak that slowly got more severe". I think it conjures the proper mental image. It is a form of MPB, yes, but that's a broad category.
My point is the widow's peak is wholly unrelated to baldness and often exists on a full hairline. The recession you're describing is MPB, but again, is independent of the widow's peak phenomenon.
Semantically they're different things that often get conflated.
