I think it's not, from my opinions formed by TvTropes a whole 15 years ago. They had guidelines about what constitutes a trope, and had a counter-example named "people sitting on chairs" - a common, daily occurrence that is prevalent in media because it's prevalent in reality, not because it means something.
So tldr, it's not a trope, because it's just common. For extra clarification, another TvTropes example: "curtains match the windows" for hair & eye-color matching; it explicitly mentions only unusual colors, so someone having brown eyes and brown hair doesn't count as an example of this trope.
A visual trope, I suppose. I've noticed that, often enough, long-haired male characters are pretty relevant in the story (either as good or as bad guys).
(though I did mean this post as a bit tongue-in-cheek too ^^'')
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u/WeepinbellJar13 6h ago
Alucard and Dracula
https://giphy.com/gifs/9uIxtEwOp3oMe76XNT