Depends on jurisdiction, but in a fair number it would be “menacing”.
A person is guilty of menacing when by some movement of body or any instrument the person intentionally places another person in fear of imminent physical injury.
That’s Delaware’s, but different states do it differently, and some out that classification under stalking.
Following someone around intentionally and knowingly causing them fear of injury is illegal. Why on earth would you even for a moment think you’re allowed to do that? It’s like thinking guns are legal so you can point your gun at someone on the street.
Lives in the same building for one of the examples given. And we’re not DAs, we get the benefit of OP telling us their state of mind and intent which involves very explicitly making choices of dress, behavior and demeanor for the explicit purpose of quite literally menacing women for his own amusement.
Difficult to prosecute doesn’t make something legal.