MacOS – How to access Garage Band stock sounds

I have used stock sounds from iMovie (where they are called "sound effects") and would like to browse more, for example footsteps or rain to add on a podcast. Apple allows the use of loops and audio samples, as long as they are not repackaged as loops:

individual audio loops may not be commercially or otherwise
distributed on a standalone basis, nor may they be repackaged in whole
or in part as audio samples, sound effects or music beds."

So don't worry, you can make commercial music with GarageBand, you
just can't distribute the loops as loops.

I am unable to download the Essential Sounds library for lack of disk space (I downloaded 1.1 GB of the 2.1 and the compressed download expanded to 24 GB). This page mentions that Garage Band comes with 50 sounds:

When you download GarageBand from the Mac App Store, you’ll immediately get 50 sounds, 500 loops, 1 drummer, and 2 basic lessons for guitar and piano.

But I cannot find where in the app those sounds are.

I would like to access them, e.g. browsing the stock sounds and then showing them on disk or exporting them on a track to import into my Digital Audio Workstation (which is not Garage Band).

Does Garage Band come with stock sounds? How can I access them on Garage Band for macOS Mojave 10.14.6?