Ron Unz,...who happens to be Jewish, has spent a good bit of time looking into the Holocaust subject. He posted his essay on his page last year and it's created an ongoing discussion since that time.

It's a long read with thousands of comments. I'm not particularly interested in the subject but I've read most of it and many of the comments. He's turned up some interesting information.

He neither confirms or denies. He just takes a critical look at how the subject has came to be since the end of WW2.

https://www.unz.com/runz/american-pravda-holocaust-denial/?showcomments#comments