None that I'm aware of. Thing to understand is that Notion and Confluence are vastly different products.

Notion is more for sharing a set of documents that are often used. And thus create some hierarchy of content without right management or structure. Works well if you are business owner or a team, or a small company. Or if you want to onboard noob users into documenting their work. And Notion is very good at that

Confluence works better to manage a lot of documents, give rights, structure content, organize. Confluence is not very good at it, but this is a difficult task and competitors don't do better

So depending on where you are at, you can pick the one which suits you best. They are others less popular tools than Confluence and Notion but still are in the two categories described above