Ren Hang is my all time favorite photographer. He is also known as one of the most radical artists in China, and I’m pretty sure his works are banned from China (so he holds shows in Europe). Almost all his pictures include nudity including genitalia. So if you want to check out clean version of his works, go to his instagram.
Also this is an article about the photographer with the interview.
Accordingly, he photographs nudes because he thinks that is how we come into the world and thus they are human’s original forms. He explains that this is why he doesn’t depict nudes in a sexualized way but rather truthful.