I have a pretty robust set of guidelines and checklist items that i use, but many times seeing one thing causes me to look at others based upon what i saw. So it is not just a matter of checking off items. I also often see things that aren’t on my checklist. After a while, you have seem so many issues, your eyes just go there looking for repeats. I don’t publish my guidelines.
Your best option is to find someone you trust and is willing to talk through all of the issues before the prebuy. Have saved owners a good bit of time and money excluding planes before the inspection, based upon data available along with the buyers goals and risk tolerance. Some are looking for a lindy winner and others seeking value. Some even accept issues to make it affordable.