usually they’re pretty basic but it varies a lot from game to game :) my dark souls 1 note looks something like this:

next move

• [ordered to-do list, smaller non-boss things i am currently trying to do]

latent to-do

• [list of things i want to do eventually but don’t need right now]

[checklist of bosses ordered by route]

sorry for not just slapping a screenshot in here, english is not my native language so it probably wouldn’t be very useful