Literally the only hardcore porn stars who crossed over into mainstream acting were Sunny Leone and Ron Jeremy, the former is an A-Lister in a foreign market while the latter mainly went above and beyond to astroturf his own career outside of porn, banking on his downright bad looks, goofball sense of self-deprecating humor, and the fact he is probably the only male porn star normies know by name aside from maybe John Holmes.
There are a few softcore-exclusive porn actresses and actors who do crossover into the wider mainstream like David Duchovny who had some roles in the early days of Skinemax on shows like Red Shoes Diaries before he hit it really big with with The X-Files in the 90's.
The Simpsons gag about Mulder's FBI badge showing him in a speedo was meant as a reference to that.
Christine Nguyen is one of the last actresses who was a softcore star that never did hardcore as far as anyone knows and is apparently more active in the mainstream than one would think.
She had a cameo in Get Him To The Greek and was a semi-regular actress for smaller roles on SyFy original movies and The Asylum's mockbusters, but she also does a lot of voice acting and has been in a lot of commercials and promos. You know the Disney Channel's promos back in the 2000's? That was her.
She's also been in a few bit roles for anime (usually the dubs from the later days of Geneon or the rare Media Blasters dub) as well as lower-budget cartoons and video games and she usually is credited under the names Jennifer Loma, Jin Li, or Jennifer Lee (the last one she's also used for some of the early softcore titles she did for Showtime)
Apparently, Christine Nguyen is a good example of a softcore porn star who breaks into the mainstream.
She's not mainstream in the same way as one of the A-Lister or even B-Lister stars, but she's in the mainstream as a C-Lister who's always getting work because she's good and reliable at what she does (modeling, bit roles, and voice-overs)
That was the thing about the old softcore Skinemax stuff, it was kind of like the indie wrestling leagues. The kind of people who worked them were either hardcore porn stats whose careers were fading or had already faded or younger talent that could get their foot in the door to either move up to hardcore porn or alternately avoid the hardcore market and get low-profile but also reliably steady work in horror movies, B-movies, or bit roles.
