I’m not at my Fedora box at the moment, but when you press the super key and see the workspaces at the top, can you move them there? I sense that might be the solution.
With the default settings, when you are in the overview and you have applications running in two or more workspaces, you get a thumbnail view of your workspaces under the “Search” field. You can drag and rearrange them from there.
No, I do not think there’s a way to move whole workspaces in Gnome 40 that’s built in to it. As @alexpl notes, you can move windows between workspaces. This extension may work, but it does not seem to support Gnome 40 yet:
I have the workspace indicator extension installed, and i was able to drag something from one workspace to another. Initially I thought “oh yay! the full workspace moves”, but then I hit the activities button and found only the windows had moved