If you have installed the (which is available as a direct DMG from Apple), the Logic installation includes the necessary audio content files required for GarageBand. Once Logic is installed, GarageBand (if installed later) will utilize the shared sound library, reducing download times.
: Improved efficiency for Macs with Apple silicon (M1, M2 chips). Massive Library Expansion 1,800+ Apple Loops across genres like Hip-Hop, Future Bass, and Chill Rap. 190+ instrument patches and 50 vintage/modern drum kits. Introduction of Producer Packs garageband 10.4 dmg