King's only for Batman, BatCat, and HiC. Haven't heard of Slott in a while. Tamaki, only for Starfire's daughter. Snyder, for his choice of storytelling. Glass for Damian. Spencer for Hail Hydra. Lobdell for Starfire. I don't know what the others do.
I don't know if there's someone that's consistently hated and how much since they usually show up in burst and really specific for a topic.
The longest I know is Bendis, since the day of Avengers Disassembled until now with Jon Kent Superboy. So I'm going with him.