I think I read somewhere that Gunze's Mr. Color primary solvent is an alcohol. Considering how many different alcohols there are…
"Solvent-based acrylic" sounds like ad-speak to me (although paint technologists can be remarkably sloppy with terminology—et mea culpa…).
"Lacquer-based" is another curious term. Lacquers form a film by drying, not curing. They cam be redisolved in the proper solvent, then reapplied, without any harmful effect on the coating. Acrylic is a polymer that cures, i.e., becomes a larger polymer molecule. Depolymerization generally causes a breakdown in the polymer that results in formation of different polymers (or no polymers) than were originally present in the liquid coating.
In enamels, the purpose of combining a polymeric binder with a lacquer is usually to decrease the time to initial film formation (time to tack), and to impart desired properties to the final finish, such as gloss modification or surface hardness, or to make use of a pigment that has an affinity for that particular lacquer or that needs a property imparted by the lacquer to the final coating.
There are almost certainly synthetic lacquers that are compatible with acrylic polymers. But considering that acrylic technology has matured and acrylic paints are capable of fulfilling the needs of the hobby, I can't see why anyone would go to the trouble and undoubted additional expense of doing so.
It would be informative to see a formulation, or even an MSDS. The chance of seeing the formulation resembles that of a multicrystalline ice compaction in the hottest part of certain undesirable spiritual regions. And frankly, I'm unwilling at the moment to go hunting for the MSDS (one of the few things I miss about my former employment.) For anyone interested, your LHS should have the MSDS on file for any product they sell.