Clickup is one of the best multi-layout app.
It shows existing installed layout on the top, like tabs of browser. Which I think is not very suit for TW, but we can have a try.
I can create a LayoutList plugin, and let you decide where to put it, on the sidebar, or on the topbar.
It is not very mobile friendly.
Also can switch to the whiteboard layout
In clickup, you can have multiple variance of same layout, which means sub-layout, seems like “Mind may that show your folder structure” and “Empty mind map” here in the screenshot below.
In below is the auto generated folder tree mind map, which can mean the tag tree in tw.
When width is not enough, layout list can be nav by clicking < > button, just like the browser tab bar.
On native mobile app, we can only add limited layouts:
Here is the chat layout similar to iMessage layout
Use a button here on top bar to open the layout picker drop down.
