Although no country is currently known to deploy them in an offensive manner, all thermonuclear dial-a-yield warheads that have about 10 kiloton and lower as one dial option, with a considerable fraction of that yield derived from fusion reactions, can be considered able to be neutron bombs in use, if not in name.
https://en.wikipedia.org/wiki/Neutron_bomb
I had not thought of that, but I’m sure you are correct.
I am not a nuclear munitions expert but I always assumed they did dial a yield by choosing how much tritium/deuterium to release just before the fission stage is fired.
What they need to happen is a short but energetic burst of neutrons...I’m sure that can’t be too hard to engineer.