@racheledomingue our staff use tables for outlining their unit plans and even lesson plans. As teachers, this is also one of the quickest and easiest ways to include their information - I often describe to staff that the RCE editor page is just like a word document.
I think there could be many users in the Canvas community who are using the HTML editor for their pages, whereby the use of tables can be reduced - as images and text are coded to be on certain parts of a page (rather than using tables to arrange the page into a format that meets your needs).
To date, we have been using a combination of borderless tables to include navigation and then text/tables etc for content. I have recently shared with staff how they could use accordion menus on their pages to break up content and to avoid what we tend to call the doom scroll. I have had to learn the code and find easy ways to set this up for staff to use - and the user has to be confident to do this as well.
I have started to look into the block editor options, which do provide some nice options for layout, however, in my role, I prefer to find something that is manageable and sustainable for staff and at the moment tables and text is their best way.
There are lots of great options and examples on Canvas Commons. I have recently found that you can embed apps like genially onto pages which makes for a great visual and interaction for displaying content for students. This might be an option for you while the block editor continues to be tested.