What is the difference between OnlyFans and Patreon?

Patreon is mostly a great service for artists, traditional and digital. Even photography as long as its not adult content. Although the hand drawn erotica seems to be ok. Onlyfans is better for video and photographic nudity. You can upload art as well. It’s what I have been using for my adult video. Because most platforms can allow realistic content due to legal reasons. There is also FansMine.com