The primary article for creating an OpenCore installer from Windows is the Dortania OpenCore Install Guide
EFI/BOOT/BOOTx64.efi and EFI/OC/OpenCore.efi)BaseSystem.dmg or Install macOS Monterey/Ventura/Sonoma/Sequoia.app bundled inside).exe that formats your USB to FAT32/GUID)config.plist ( For common chipsets: Intel 300/400/500/600 series and AMD Ryzen)You can keep a "golden" USB drive ready for future clean installs without needing to re-download everything.