"Common" Breakpoint Guides

A suggestion for a new guide for this site would be to do one with common breakpoints.

IE research relative raids, common defenders like Blissey, Snorlax, etc and come up with a guide that says

something like
Tyrantir: A common breakpoint most people strive for with 15 attack is 31. This would cover past legendaries like Moltress, and common Gym Defenders like Blissey.

((Note: The numbers and examples above are totally made up, it's what I mean about average breakpoints. Since they are totally dependent on defender, a typical level/attack would be helpful even if it wouldn't cover 100% of cases)