OO and OO.
OO has been my go-to cooking oil for a very long time. Although I don't use it for all things, it is the one I use the most frequently and the one I have to replenish the most often.
And I do like 100% OO Soap, so there's that.
To answer ResolvableOwl, I actually like 100% Cocoa Butter soap, but it's pretty expensive for a single oil soap, so I wouldn't choose it as my only oil. I've never cooked with it myself, but I have tasted some really good raw vegan candy make with it & cocoa powder mixed together. I am sure it would bring some problems when used to make salad dressings or mayonnaise, however, so it wouldn't serve well for all-purpose cooking in the kitchen.