After SOTN there is the following in order I believe: OOE, Dracula (novel), Bloodlines, POR, prior to 1999.
I can't comment on Bloodlines because I haven't played it through, but I know he's resurrected by Bartley. I would say that by OOE he seems to have lost a lot more "humanity" than SOTN, only his physique and style looks similar. The Dracula novel is the novel, though he does seem to be committing acts of evil with little humanity or regard for it. POR's Dracula seems much different in design etc from previous iterations (he's actually a bit more similar to Dracula X/ VK's design, at least in his sprite) he just seems cliche evil taking on the form of the 'classic Dracula' villain.
It's true, it doesn't seem there are any particularly humane characteristics after SOTN. Not that thise was in abundance prior to SOTN, but still something to think about.