- What exactly do you mean by “higher power targets”?
To give a broad answer, it is worthwhile to employ cadence and relative effort similar to what you need in your outside riding. For climbing related use, that commonly means using a lower gearing (for slower flywheel speed) and a cadence range matching your actual use outside (like 60-75 rpm).
I wrote a Low Cadence article which can be used for climbing training:
Generally speaking, I do low cadence work at Sweet Spot or lower power levels. I don’t think it makes sense in higher power, UNLESS those are similar to what you need outside. If that is the case, then mimic as appropriate.