Continental - So called because at one time this level of posing could only be found in continental magazines. It involves the insertion of sex-toys or fingers or whatever in the genitals. This level is now found on the website versions of many top shelf mags in the UK and is basically "industry standard" for the US market and some fairly well known publications such as Penthouse and Hustler sometimes now go up to this level.
Copy and paste from Purple Port modelling website.
Indeed this.
"US" used to refer to open leg, "pink" shots but no insertions
"UK" was the more demure bush shots, no pink showing
Oh so many years ago, last millennium, before the WWW bust the porn standards wider open than Mandingo would a hamster.