I've become a big fan of Vinesauce over the past few months, Vinny and Joel are my favorites, but Vinesauce is made up of a handful of streamers who are all pretty great, and at least a handful of them have streamed Dark Souls 1 and II in the past, Joel
did a video of him playing it drunk which is bound to be fun, Fred's
got a death reel of him vs. the Pursuer in DkSII which is a little cringy but an honest look into getting used to the goodness that is Dark Souls, and Rev
has some early Dark Souls 1 gameplay, which you may relate to more closely since it's a lot of stuff you've already played/will soon be playing.
And of course following suit with Vasae, I also happen to know a guy
who does streams and videos from time to time, including Dark Souls stuff.