@CaseySJ, I was able to successfully install Catalina on OC. I was able to successfully sign up to iCloud and everything seems to be working until I performed migration from High Sierra (used to run on Clover) using Migration Assistant. I have connected Time Machine backup as a source, however after everything was complete 2 strange things happened:
1. I was unable to boot into Catalina after Migration Assistant has finished. It seems due to kernel panic. See the picture attached.
2. After reseting nvram using OC and booting back into High Sierra through Clover I noticed there is bunch of '?' marks on the doc. It does look like this '?' reflect application from Catalina and it does not exist in High Sierra, but this is so weird as why would that happen??? I was moving stuff from High Sierra to Catalina and why would High Sierra be impacted. It is interesting that I noticed the same situation even when I boot from CLONE of High Sierra that I have and which was completely disconnected during the entire process but yet still get '??' marks on the doc even on the older system clone drive.
What would be the best practice of moving off from High Sierra to Catalina. I could do in place upgrade as well, but I thought installing the system form scratch and using Migration Assistance is the cleanest way, but yet can not start up and not sure how these strange things with '??' marks happen to the older High Sierra.