You have as3isolib (in the list), which is a good library and in a lot of cases, a simple iso lib and some 3d engines like away3D or papervision3d are enough.
This is a comparison of 11 major flash isometric engines, some of which are already listed in the list you found:
http://www.emanueleferonato.com/2010/02/23/11-flash-isometric-engines-you-can-use-in-your-games/