Is that not more omni - to write in a neutral voice?
My Standard disQualifier: I don't know squat about this stuff...
I wouldn't think so. I assume I write primarily in a close third. Hoping I'm doing it right, the character who's viewpoint it is in X chapter speaks the way they always speak/think, the other characters speak how they do (though we don't see their thoughts or motivations--even history), the hard core narration is very detached--almost distant--and my action, sights, sounds and so on read rather level though close to narration...BUT, are not in the voice of the current viewpoint's character.
What makes me hope I'm 3rd not 3-O, is that whichever character's viewpoint the chapter is in, is the ONLY one who we'll see their thoughts. Everyone else, the best either the character OR the action/narration can do is assume, guess, etc.. In 3-O (it's my understanding), each characters thoughts, motivations, background and so on is addressed directly...as though some super-human mindreader is narrating the whole thing except dialogue.
Anywho, just my guess... Look in my eyes, what am I thinking?
P.S.: Viewpoints in my current work, are primarily the protagonists, and in various chapters I have other characters taking the lead viewpoint role...but, we only see one character's viewpoint per chapter. In a couple, the last paragraph or two might shift to a different character, but I make it so obvious and clear there is no question. Then I have the chapters most will hate...they're from a purely narrative viewpoint with little bits here and there as though observing 'a' character with a 3-O feel but so character specific, I just call it close 3rd narration.
K2