TBH all you need to add is Synapse. I have only that in the block list, and it is successful at blocking all of them.
Remember, if you add it to the list, it will take as much time as you have set in vBoptions for them to disappear, from the online list, as you have set for the timeout.
So if your timeout is set to 15 min, and you add a bot, it will take at least that long before they no longer appear in who's online.