I live in a flat region so things like over-unders or short but high power repeats are hard to nail because there’s isn’t constant resistance like there would be on a climb. Therefore sustained power intervals that are the easiest for me.
It definitely takes some experimentation and trial and error. Don’t be let down if your power isn’t (it won’t be) as smooth as it is indoors, while not 100% optimal you’ll still be getting quality work done. And intervals outdoors are so much better mentally than indoors.