I've only played DMC3 and 4, but I regularly went reading on 1 and 2.

I'm still not too sure about Darksiders though, Bayonetta with DMC I can agree with, I've played Bayonetta 1, so I know how the worlds can meld at least, but I've no clue on Darksiders and how it's lore can or will clash with Bayonetta and DMC.

EDIT: Light reading tells me that I foresee problems with what is the main authority in hell with Darksiders. In DMC it's Mundus, in Darksiders it's the Council.