so, what does get along with a gourami?

#1
are there any other midsize fish that get along with gouramis? Or is he now my center piece and I need to add more shoalers and catfish if i want more fish?

I'm moving my betta his own tank w/a couple cories. the big gourami and the betta don't fight, but since i took the goldfish out of the tank the biggest gourmai doesn't have enough to do and is picking on the other gourami bad and my betta seems to be hiding more. I thought they got along ok, but the goldfish distracted the gourami from picking on the other two.