First, I don't think that "listen to a rock music record backwards, light some black candles and wear an upside down pentacle, and call themselves a Satanist" qualifies as being a stereotypical 'Hollywood Satanist', who kills kittens for fun and then rapes little girls and sacrifces them to Satan...
Second, the Story of Faust summoning Mephisto is really more fiction than history and it's alluding to the flowering of Renaissance magic. (It's not a mediaeval story.) It's not about acquiring power (What Sabikism is about), but knowledge and (self-)insight. That's why Mephisto eventually fails to pull Faust over to the dark side in the story.
Third, the Thugee had historically probably more social reasosn to robbery and murder than religious ones, borne out of necessity through poverty. While colonial sources ascribe religious motives to them that circled around them born from Kali's sweat and killing people to feed her, so that she wouldn't devour all humanity, it's documented that also Sikhs and Muslims were Thugees - and they certainly wouldn't join a Hindu assasin cult. That said, even the Thugees motives as ascribed by the colonical sources don't show the a-social ethos that PF ascribes to Sabikism.
I really think there is no non-fictional equivalent to the Sani Sabik to be found (with the excaeption of 'light' or 'popularized' forms of Sabikism, like the circle of Gallenteans that shares their own blood or get themselves seriously sick, because they drank a black cats blood for more 'recreational' reasons. They don't really qualify as being strictly Sani Sabik, imho, though.)