Olarila provides custom, pre-built macOS images designed specifically for Hackintosh installations on non-Apple hardware. The "Olarila Catalina 10.15.7" image is a "Vanilla" version, meaning it aims to keep the core macOS files untouched while including the necessary bootloaders (like Clover or OpenCore) and drivers to run on standard PCs.
Even with macOS Ventura and Sonoma available, Catalina 10.15.7 remains the for:
To successfully install Olarila Catalina, you generally need to follow these steps: i need catalina 10.15.7 link PLEASE - Hackintosh Olarila