@Feartech @macntosh I am almost there in getting to a perfect installation. Only annoying issue now is not able to awake from a hibernation. After display turns off, for a while (probably an hour or two) I can use keyboard or mouse to awake screen again (it started working like this after passing igfxonln=1 in boot args). At this point, it seems that only display is off and I have LEDs on the computer ON. If I miss this time window and when the LEDs on computer turn off then pressing keyboards wakes up the computer, however, the display doesn't turn on. I went through this section to tweak it:
https://dortania.github.io/OpenCore-Post-Install/universal/sleep.html#preparations
I have attached my config.plist, energy saver settings, and the log from pmset. I am sure I missed a step somewhere display settings. Any help you can provide is much appreciated.