All over the map.
The original thread on the Last Bass Outpost contains a fair amount of confusion about the new M85's. In particular people do not seem to realize the difference between the limited edition GSR M85II and the production volume Newark Street M85I both of which are in the "new" market at the moment. The review and discussion muddies the comparison between the NS and Bisonic, which is not the reviewer's fault, because of the suggestion that the body depth is a factor and thus a Starfire should sound different than a M85 with the same configurations. (That was not my experience, but I played Grot's M85I for all of 15 minutes so I'm sure my opinion is not definitive). I also saw the word "nasal" applied to a vintage Bisonic. I understand where the comment comes from but where they heard nasal I heard "woody" and I wonder whether the characteristic I look for in a Bisonic replacement is considered a flaw by others. In any event, given the absence of a Newark Street M85 owner posting here, it is a good read.
Factory M85s were "hollow" (see below) with no f holes or (after 1971) solid bodied. The "Phil Lesh" M85 owned by mgod is fretless, has f holes and is one of three instruments custom build by Guild. I am trying to quote
this article so if that doesn't sound right then I need to practice my reading skills.
Most bassists I talk to don't bother to distinguish bodies beyond "hollow" or "solid". The Starfire is more precisely a semi-hollow as it has a block of wood running down the center, almost as if the neck continued into the body. I am unclear whether the M85 has the same block or not. If it doesn't then there is probably a piece of wood under the bridge that gives the screws something to hold on to. If that is the case I would argue for hollow rather than semi-hollow. I can't recall that I have ever heard of a chambered bass - which might also be called semi-hollow - where a chamber was "dug out" of a solid block of wood. I'm sure one exists but it just isn't on my radar.