It would probably get up to page 2 before being moth balled. I say go for it in this thread. It's a genre I am very familiar with.
Some of the best ones:
https://youtube.com/watch?v=V355OG77SQM
https://youtube.com/watch?v=Dsa7Fzu-xWk
https://youtube.com/watch?v=XEBigcZTrjU
Then you have other shit like your Faces of Death and what have you. I would recommend watching Mondo Cane 1 and 2 just to see where it all started even though they're pretty tame by today's standards to say the least.
https://youtube.com/watch?v=8L6IcP9OSVQ
https://youtube.com/watch?v=Wh9kzf0Zcd4
Goodbye Uncle Tom (which is making it's way to 4K UHD soon) is a fascinating entry and the penultimate film from Jacopetti and Prosperi. The directors are pieces of shit especially for making this movie so I'm not defending them but it is one of those movies that came out at a certain time and place that could never happen again. The director's praised the Papa Doc dictatorship that allowed them to do whatever they wanted to the locals in Haiti. Then you have the abundant child nudity. It's not a super graphic film in comparison to Cannibal Holocaust it's more about the exploitation of humans which puts it more on par with Salo: the 120 Days of Sodom. The directors claim it was a movie that was anti-racism but I don't believe that. I think they wanted to piss off the entire world and had their middle fingers aimed at everyone, white, black, Catholic, whoever, and whatever.