I have done marketing/advertising and graphic design work for 5+ years and I'm not known at all, nor will I ever be, because it's just a job, an interesting job, but I'm not vying to be a famed artist by any means. The positions she lists are similar to what I do which is just to coordinate advertising/compile photos and information for publications/do grunt work basically, lol. Pre-internet especially, you would have to be an incredibly famous commercial artist (and one who was looking to make a career out of your name, as opposed to just doing the work and going home at 5pm) for your name to be out there or for any work to survive in the public sphere and actually be attributed to the person who did it (as opposed to the company they worked for or their manager etc). Just because I use Photoshop and Illustrator at work, keep a catalogue of other peoples' photography and do ghostwriting for my bosses does not mean I am or have any interest in ever being well known for doing so.
I don't think Lori was a famous artist under any name, just that it's possible this was the industry she was experienced at working in and the kind of work she was used to doing even before she made her identity change, and just picked up doing this kind of work as LEK because it's what she knew. She may have expected that as LEK she would be able to go further than under her previous identity, but obviously that didn't really pan out... But anyway, if we followed the angle that she could have been doing this kind of work prior to her identity change as well, I think it's possible there may be marketing executives in LA or Dallas who knew her pre-identity change by her other name. I think it's another long shot, but just something that's another possibility... I guess it's worth mentioning that this whole idea hinges on her probably being considerably older than she claimed, in her late 20s at the time of the Idaho ID I'd say..