I love angels, but have never kept gouramis. What I can do is pass along experiences from friends though. It seems to me that dwarf, honey or lace gouramies might do ok with angels, but blue gouramies (and all the variants i.e gold and opaline etc.) might start feuding with angels *** they mature.
I'd try an angel tank with all south american fish like angels (maybe a festivum or two) with tetras, cories and maybe a few dwarf cichlids. Or a gourami tank with rasboras and botias. As you can tell, I kinda like to keep species that cohabitate in the wild together in the same tank.
Just a few suggestions, whatever you try, good luck