@Dagamanama It looks like almost all of your .package files are custom content, not mods, so they wouldn't show up at the Main Menu. For the ones in Overrides, most of those look to be default replacements for existing in-game items. So they wouldn't show up as additional items, they'd overwrite what you already have.
Additionally, if you don't own the packs in question—you can see that most of these items have mention a pack in their names—the items won't load at all. Let me know which expansion and stuff packs you own and whether the items associated with those packs are loading in-game. For example, if you don't have Seasons installed, the items with EP8 in their name wouldn't show up either.
Finally, please delete the cache files every time you quit, at least while you're troubleshooting.