After playing ER and DS3, this is what I think about the bosses in both games
The only tiers that aren't in order are "Perfect" and "Mid". I legit couldn't choose who I like more in the perfect tier and mid tier is just mid so who cares
Now for the lower tiers, I organized them from the ones I dislike the most (I hate godskin noble the most out of any boss so he is number 1 and then Gideon and so on and so forth, the same thing going for the 2 tiers above it) to the ones that I dislike the least.
Since I know that the Godfrey one will ruffle feathers, I wanna point out that I really like his phase 1 but absolutely despise phase 2 so that's why he is where he is.