Missing Logic Instruments and Effects

Hey, All.

I just migrated from an old (2012) iMac to a Mac Studio Max.

Aside from the Silicon incompatibilities, i do have Logic Pro X 10.7.4 running with my essential third-party plugins. But, there are no Logic instruments or effects available from the same menus where i select my other effects.

If i choose a preset in the Library, though—the appropriate Logic instrument will be initiated. For example, Alchemy and Sampler will open. But, even while open they are still not shown in that channel strip menu where any other plugin would be initiated. And if i close those two Logic plugins and use a third party, the Logic instrument i just had running will not be shown in the menu as a Recent.

I'm just getting used to Monterey after having been stuck on Mojave for forever... and maybe this is just another 'tweak' to the UI and all of the instruments/effects are now found somewhere else? That would be strange/unfortunate, though....

I tried trashing the com.apple.audiounits.cache file, but that didn't resolve anything.

Show me the light?