Just limiting ourselves to pop-A and TL-A or better, we have Entrope, Porozlo, Mire, Narsil, Fornice, Mora, Trin (TL also matters; Rhylanor and Glisten, at 8B/TLF, are more powerful than several of those worlds). Using traditional world generation routines, pop-A worlds will be one world in 36, will contain 81% of the population of the Imperium, and due to TL differences will control something like 85% of the total wealth.