The issue you are seeing with the AWS module will be resolved in 2.9. We were assuming that only modules with a very specific format (like the one we generate in PSU) would be in the folder.
As for the NuGet provider…this one has me a bit perplexed. The location looks correct but I’m wondering if it’s because we aren’t calling Import-PackageProvider: Bootstrapping NuGet - PowerShell | Microsoft Docs
What’s even a bit weirder is that the version of PackageManagement we ship with PSU contains the NuGet provider.
I’m going to play around with this. Can you let me know how you are hosting PSU?