Brauner's name is derived from Victor Brauner which is a surname but in Castlevania they use it as a first name.
Orlox and Carmilla were never a problem. This explanation wouldn't work for the first two because that would just be silly. Brauner didn't became a vampire until WO I. I guess Cornell would work but I think it would be just stupid...
I definitely agree with you that it's very unnecessary to try and connect the two continuities, so it's a bit silly to try and do so.
I don't think it would really be an "insult" to the Castlevania cannon, though. As much as I love the series, the story has become very convoluted and ridiculous over the years. I mean really, "OMG! It's reincarnated Dracula....from the FUTURE!," or "oh, I get it. The guy in the top hat is a time traveler. Wait, what?" That’s part of the reason I'm glad this is a reboot.... the series has A LOT of baggage.
Anyway, those scans pretty much confirm that Zobek is a lord of shadow. ("Zobek and the other lords of shadow")