Hitman.
Breach (mid-00's, started as a Captain Atom relaunch, turned into its own weird Half-Life meets superheroes thing)
Manhunter (mid-00's)
Damage (early 90's)
The Ray (early 90's. First series Priest did after changing his name, I believe).
Steel (at least the first twenty-some issues, then the last few with....was it Priest again?)
Young Justice (that doesn't make a lot of top lists, right?)
Black Canary (DCYOU. I thought it was good, sue me)
Space Ghost (mid 00's. Art by Copiel or someone. Fun adaptation)
Green Lantern Mosaic.