I separate my content into two categories. “Things i’d be posting anyways” and “Things i can only do because of my patrons”.
I don’t use patreon as a paywall for my usual content. So, finished content still gets posted everywhere (but patrons get a 5 day early access preview of my finished work before it gets posted publicly. They also get higher resolution images than what gets posted publicly.) So finished art, videos, etc, all still get posted publicly in the end, patrons get early access to it and input on what i create.
Some content is patron only because I wouldn’t really be consistently posting it otherwise. So, sketches, behind the scenes stuff usually gets posted to patrons only because otherwise, i’d maybe post a little teaser of something on social media once in a blue moon. Their pledges afford me the time to show processes, make tutorials, etc. their support is the reason i can put time aside for a monthly project of their choosing, make videos, etc. While all that content does become available publicly in the end, they get to direct me on what i make and they do get early access to custom item openings, sales, etc. (Some products i make through their direction get put in my stores only. Things like 3D models i’ve created as artistic references, etc. Those things are products that i can’t really afford to make free but they are still really cheap, $5 usually, because my patrons helps support the initial cost of time and resources to make such things.)
It really depends on what you want to create, what you think works for you. Sometimes people will make an item and have a special version for patrons as a thank you. Sometimes people will create one of a kind items and give first chance to purchase it to their patrons. Q&A’s, livestreams, content polls, etc. It’s all up to you. Don’t feel like once you’ve chosen how you want to run your patreon that you have to stay that way. I’ve made big alterations to my project on a yearly basis to keep things fresh and interesting as my patrons and the world changes. I’m constantly asking my patrons what they want to see, what they prefer to see from me, etc. I’m always adding new things and altering old things to be more interesting.