@GameMasterSandR Everything you've listed except for Katy Perry Sweet Treats is a Sims 3 Store world (not an expansion pack), and these worlds must be installed through the Store site. If you've registered them, you'll be able to download them from your purchase history, under Store > My Store Account, or from their product pages, found here;
https://store.thesims3.com/worldProductDetail.html?categoryId=12642
For further information on registering or installing Store worlds, please see the first post of this thread:
https://answers.ea.com/t5/Store-Issues/Sims-3-Store-world-can-t-register-install/td-p/12619800
For KPST, what happens when you try to install it? And just to confirm, it's not listed in the Sims 3 launcher's Expansions & Stuff Packs tab?
