[dragonwriter]

> "Catcalling, harassment, sexual demands for career advancement, rape" - those are not nearly in the same category.

Yes, they are in the same category of “unwanted sexual conduct”.

Now, sure, there are narrower categories each could also be put in which exclude some others.

> I am still not sure how often women simply consider sexual interest to be harassment.

Interest is an internal state; women may not want you to have interest, but short of some outward act they are unlikely to have anything to consider harassment.

If you are expressing unwanted interest in the workplace, or particularly in a context where you exercise economic power over the subject of that interest, they aren't wrong to view it as harassment.