These are the builds that have been theory crafted, usually trying to centralize on a set and specific damage type. There may be some minor tuning to do with the builds. Use these guides as a baseline and adjust as needed.
Some builds are more gear specific then others. For the armor as a general rule of thumb, focus on capping your resistances.
For weapons, focus on the damage type that your build does.
Accessories give you a little wiggle room, can be more oriented for damage or resistance, which ever you’re lacking.