The ranking has serious limitations, which are completely unavoidable: Algorithm has simple models of income, spending, military power, envoy use, monarch point budget and so on, and given such assumptions vast number of bonuses can be reduced to just a few.
The game has huge number of bonuses, and they're reduced to other bonuses based on some sensible assumptions. As dip/adm are far more valuable than mil, they're both worth 1.1 and mil is just 0.8, so they average to correct value. Value of +1 monarch point per month is 1, and that's the unit everything is expressed in. I've written it a while ago, but I'm posting it now, as next patch will mess with the values. The algorithm not only gives meaningful relative rankings, it gives meaningful absolute values - expressed in monarch points. I have no intention of joining this making stuff up contest, so instead here's a ranking that's as close to correct as it's possible to get. People just love to discuss EU4 idea groups, and to be honest almost everything they say is completely wrong.