I picked other because I think you should come up with something that isn’t already so over-saturated!
Maybe pick one of the tropes listed and switch it up? Like, instead of doing a typical “boss” love story, why not make it set in the Golden Age of Piracy, and your boss is a Privateer hunting a sexy pirate guy? That way you can have all the fixings (forbidden romance, love triangles, sexy boss, bad boy, what have you…) and still be somewhat original.
You can apply this to really any interesting period of time. Instead of gang leader, why not do a ninja clan of assassins? Or, instead of a school romance, maybe mix it up and make it a school for kids learning to become space cadets?