Unfortunately, no, although that would be very useful. In the current versions of Gnome Shell, the overview shows all active windows. There is no way to show windows of a single application only (likely with the exception, of course, of dedicated Gnome Shell extensions, but none exists that does that a.f.a.i.k).
For sure, that would be a very valid feature request for Gnome Shell. The forthcoming Ubuntu 22.20, however, will feature app spread in the Ubuntu dock, i.e., where clicking the dock will show a spread of the windows of the current applications only.