Proximity effect, mic choice and voice are going to be the main factors.
I high pass quite heavily because, really, I need to.
I think most of it is the tone of my voice because I have a pretty deep voice and I've tried any number of mics.
I usually end up rolling off quite high, maybe around 250, and also making a wide cut at 500 or so to add to the curve, if that makes sense.
That's usually with an sm7b which, again, is going to be bass heavy.
I have recorded people where it just wasn't necessary at all.