After upgrading to OpenCore 0.6.1 using your EFI folder, I received an error booting Mojave: "Apple secure boot prohibits this boot entry, enforcing!" The fix was upgrading to OpenCore Configurator version 2.12.0.0 (Released today w/ 0.6.1 official support) and going into Misc / Security and setting SecureBootModel to Disabled.
This was only needed for Mojave; Catalina booted okay without this setting. I read OpenCore 0.6.1 has new secure boot functionality - and this setting is new - but I haven't figured out why this is needed just for Mojave.
View attachment 487348