I'll just start with a short description of the ones I can think of.
Kamiya: Top tier, DMC1 remains as my favorite DMC still and I think there hasn't been anything like Okami(and will most likely never will be). Even the games that I haven't played such as W101 look really great.
Mikami: Despite never being much of a tank RE fan, RE4 is one of my favorite action games ever, with games like God Hand or Vanquish I'd easily place him next to Kamiya as far as great developers go.
Itsuno: I feel like Itsuno will never really deliver a bad game but at the same time he's not really gonna deliver masterpieces or anything near DMC3 level ever again. A good game developer, but as stated on gamefaqs I feel like he's always missing something or off in really obvious aspects of the games he's directing(WE WANT DANTE).
Suda51: Suda gives me the same vibe as Itsuno as in "guaranteed fun" except with way more acid and with a somewhat lower quality. People keep complaining about how he really dropped his ball after Killer7 and NMH but I feel like they never were that much to begin with and most of his games post NHM are still entertaining enough to warrant a gameplay. I also feel like he enjoys creating bad games on purpose such as Michigan just for the sake of it.
Taro: Massive hack. (Yes, this is bait).