Here's my best attempt, utilizing 4 instances instead of 6 because there was already a quad sine LFO. I think it sounds pretty good, even if it attenuates the signal a little bit. There are plenty of ways to make it loud again. :)
Edit 9:36 - Added quick demo to showcase the intended use case. Please sweep the waveform to see how it responds to sine and triangle as well as saw but doesn't really work with square.