So many people confuse a certain group of game designers. Mikami, Kayima, Suda, Platinum, and Grasshopper are all very different groups and people. Here's cliff note versions.
Shinji Mikami- Creator of the original Resident Evil. Director of Resident Evil 4. Director of Vanquish. Produced plenty of stuff including Devil May Cry and Killer 7. Does not work at Platinum but has worked WITH them.
Hideki Kayima- Director of Devil May Cry, Viewtiful Joe, Okami, and Bayonetta. Works at Platinum.
Suda 51- The most prominent figure from Grasshopper Interactive. Directed Killer 7, and No More Heroes. Never worked AT Capcom, but did work with them previously.
This game, Shadow of the Damned is a collaboration between Suda 51's Grasshopper Manufacture and Shinji Mikami. So there's no real reason to be comparing Shadow of the Damned to Bayonetta.
Note that the above resumes are not complete, just stuff off the top of my head.