I just found Newsmax LIVE on Rumble. I can't get the channel on Sling; it's not offered. I only just found this, so don't know if this is all programming/shows, but it's live. This might be the option that you've been looking for, but obviously can't DVD it since it's live.
View: https://rumble.com/v2n8po6-newsmax-tv-live-real-news-for-real-people.html
View: https://rumble.com/v2n8po6-newsmax-tv-live-real-news-for-real-people.html