I think I use some Community pages I've made a bit like how highlighter works. They are less an actual community than a scrapbook or a Tumblr lol eg n/TouchGrass (although people are obvious welcome to leave submissions lol).

Haven't really fully explored highlighter, and will give it more of a go when home. Maybe it could be cool to have an option to Publicly as Community (maybe community is the wrong word here). 🤔